topic 1
Definition, Essence, and Peculiarities of Public International Law
Definition of International Law:
International law is a comprehensive system of legal norms that governs the interactions and relationships between various entities within the international community. These entities primarily include sovereign states and international organizations. It provides a framework for regulating their conduct and addressing issues of mutual concern.
The term "international law" was coined by Jeremy Bentham in 1780, who introduced it in his work “Introduction to the Principles of Morals and Legislation”.
Sociological Approach:
The sociological approach emphasizes the "international community" as a distinct social reality. This community is characterized by shared interests and the need for cooperation among its members.
International law regulates relations within this community (ubi societas, ibi ius), ensuring order and facilitating interactions.
Synonymy:
"International law" is synonymous with "public international law."
The latter emphasizes the regulation of relations between sovereign states, highlighting the public or governmental nature of these interactions.
Nature of Relations:
Relations between subjects are horizontal, reflecting the principle of sovereign equality. These interactions are not based on power and subordination but rather on mutual recognition and respect.
Social Basis:
The social basis of international law lies in the necessity for international communication to realize the economic, cultural, environmental, and other diverse interests of states and their citizens. This underscores the interconnectedness of the global community.
Scope:
International law's scope is extensive, covering relations between states in various forms, including war, satellite activities, trade, human rights, and cyber issues. It addresses a wide array of global challenges and concerns.
It regulates the operations of international and regional institutions, ensuring they act within a legal framework and in accordance with established principles.
Application:
International law can be universally applied, binding on all or nearly all states, reflecting a global consensus on certain fundamental principles. It can also be regionally applied, pertaining to geographically or ideologically linked states, with examples such as diplomatic asylum in Latin America.
Object and Subject of Legal Regulation
Subjects of International Law:
Traditionally, states were the primary subjects of international law, wielding the capacity to enter into treaties, maintain diplomatic relations, and bear international responsibilities.
Now, subjects include individuals, particularly since the establishment of international criminal tribunals, which hold individuals accountable for serious violations of international law.
Other actors in the international legal arena encompass transnational corporations, non-state actors, and even terrorist groups, necessitating the regulation of their activities to prevent harm and ensure accountability.
International Personality:
Subjects possess international personality, meaning they possess international rights and duties and can act on the international stage.
Throughout the 19th century, States were exclusively recognized as subjects of international law. However, the landscape evolved after the Second World War, with the emergence of intergovernmental organizations, NGOs, multinational corporations, and even natural persons as actors in the international legal arena.
Definition of a Subject of International Law:
A subject of international law is an entity with the capacity to possess international rights and duties and the ability to bring international claims.
It holds an international personality based on customary or general international law, exemplified by a sovereign state.
Main Features of a Subject of International Law:
Key features include the ability to access international tribunals to seek redress for violations of international law.
The capacity to implement obligations imposed by international law is essential for maintaining compliance with international norms.
The power to make binding agreements, such as treaties, is indicative of a subject's capacity to shape international law.
Enjoyment of immunities from domestic courts of other states is pivotal for ensuring diplomatic protection and state sovereignty.
Examples of Subjects:
States hold the primary position as subjects of international law, possessing full international legal personality.
International organizations, such as the United Nations and the World Trade Organization, possess legal personality and are vested with obligations and rights distinct from those of their member states, as recognized by the ICJ.
Requirements for international organizations to be subjects of international law include:
Being a permanent association of states with lawful objects.
Having distinct legal powers and purposes separate from those of member states.
Possessing the ability to exercise powers internationally and not solely within a domestic system.
Examples of international organizations include: the European Union, the Organization of American States, the African Union, the Organization of the Islamic Conference, and UN agencies.
Object of International Law:
An object of international law is indirectly vested with rights and obligations.
For example, a Filipino private citizen is considered an object of Public International Law. While entitled to certain rights that other states should respect, the citizen typically seeks recourse through the Republic of the Philippines and its diplomatic officers.
Objects of international law entail:
Doing no injury to other nations and not receiving harm from them.
Striving to maximize benefits to other nations.
Seeking the greatest possible benefit from all other nations.
In the event of war, making endeavors to minimize evil while pursuing the desired objectives.
Public International Law and International Relations
International Law's Role:
International law functions as a set of rules binding in relations between states and nations, providing a framework for their interactions.
Provides a framework for stable and organized international relations (IR), facilitating cooperation and minimizing conflicts.
Distinction from State-Based Legal Systems:
Primarily applicable to countries, not private citizens, as it regulates relations between states.
National law becomes international law when treaties delegate national jurisdiction to supranational tribunals, indicating a shift of authority to the international level.
Sources of International Law:
Encompass international customs, agreements, treaties, accords, charters, legal precedents of the ICJ, and more, constituting the foundation of international legal norms.
Enforcement:
Largely voluntary, requiring consent to adhere to agreements, underscoring the significance of state cooperation in upholding international law.
International Relations (IR):
Explains behavior across state boundaries and the institutions overseeing interactions, offering insights into the dynamics of global politics.
Explanations found in relationships between participants, intergovernmental agreements, multinational corporations, or distribution of power, shedding light on the multifaceted factors shaping international affairs.
Public International Law as a Special Legal Order
Two Concepts:
Unified legal order (universalistic).- Scholars deny the existence of self-contained regimes, emphasizing the interconnectedness of international law.
Sum of loosely interrelated subsystems (particularistic).- Scholars emphasize particular regime characteristics, acknowledging the diversity within international law.
ILC Article 55:
Based on the perception that international law is a unified, hierarchical legal order.
Unity in Domestic Systems:
In domestic legal systems, the unity of the legal order is generally considered a consequence of the law’s systemic character.
Systemic Unity on the International Plane:
Strong notions of systemic unity are difficult to transpose to the international plane due to the decentralized nature of international law.
Informal Hierarchies:
International system builds on informal hierarchies, shaping the dynamics of international relations.
General international law is a cornerstone in which all "special" law is embedded, serving as the foundation for specific legal regimes.
Lex Specialis Principle:
Gives effect to an informal hierarchy inherent in the organization of international law, prioritizing specific rules over general ones.
Fragmentation:
Riphagen suggested that international law should be seen as the aggregate of different regimes, co-existing without any pre-defined hierarchy, acknowledging the diversity within the international legal system.
The International Criminal Tribunal for the Former Yugoslavia (ICTY), in its Tadic judgment, expressed a similar conception of international law when it held that, “[i]n International Law, every tribunal is a self-contained system (unless otherwise provided).”, underscoring the autonomy of international tribunals.
Branches of Public International Law
System of International Law:
Differentiated into general and special parts, branches, and institutes, reflecting the multifaceted nature of international law.
General Part:
Regulates the legal status of states, nations, peoples, international organizations, laying the groundwork for international legal relations.
Includes international legal personality, international responsibility, the law of international treaties, international organizations, international conferences, and international security, covering essential aspects of international law.
Special Part:
Encompasses international humanitarian law, international criminal law, the international law of the sea, international air law, international environmental law, international atomic law, international economic law, and international space law, addressing specific areas of international concern.
Other Divisions:
Law of war and law of peace, delineating the legal frameworks applicable during conflict and peacetime.
Underdevelopment of International Law:
Evident in the absence of supranational institutions, the underdeveloped institution of international responsibility, the vagueness of norms, and the presence of gaps, pointing to areas needing further development.
Causes of Underdevelopment:
Stem from derivability from sovereign states unwilling to limit themselves, the acuteness of problems facing international law, competition with non-legal regulators (including force), divergence of state interests, and the "youth" of international law, presenting challenges to its maturation.
Special, Autonomous, and "Self-Contained Regimes"
Regime Definition:
A union of rules laying down particular rights, duties, and powers, including rules for administration and breach responses, providing a framework for specific areas of international law.
Relationship Between Particular and General Rules:
A particular rule may serve as an application of the general rule, providing instructions on what a general rule requires in a given circumstance, clarifying the application of broad legal principles.
Alternatively, a particular rule may serve as an exception to the general rule, derogating from the general rule and carving out specific circumstances where it doesn't apply.
Lex Specialis Derogat Lex Generali:
Dealt with as a conflict rule, indicating which rule should be applied. The special rule replaces the general one, prioritizing specific rules over general principles.
Rationale (Grotius):
A special rule is more specific and closer to the subject at hand, regulating the matter more effectively than general rules, ensuring tailored solutions.
Treaty Interpretation:
It is one factor among others in treaty interpretation (including those mentioned in articles 30 and 31 of the VCLT as well as the principle of lex posteriori), guiding the interpretation of international agreements.
**Ways Particular Rules Relate to General Law (from the Perspective of General Law):
** - The lex specialis is expressly authorized by the relevant general law (either as a specific application of or exception to it), clarifying its relationship with broader legal principles.The lex specialis is expressly prohibited by the relevant general law, asserting the supremacy of general legal principles.
The relevant general law remains silent on the question, leaving room for interpretation regarding the relationship between specific and general rules.
Laws of War:
A general type of lex specialis, constituting an exception to legal normality, providing specific rules applicable during armed conflict.
Override peace-time norms relating to the same subjects, adapting legal norms to the unique circumstances of war.
Prohibition of Deviation:
May be due to jus cogens or other types of general law (e.g., human rights treaties), underscoring the non-derogable nature of fundamental legal principles.
Only derogation to the detriment of the beneficiaries would seem precluded, safeguarding the rights of those protected by international law.
Self-Contained Regime Definition:
A set of primary rules relating to a particular subject-matter connected with a special set of secondary rules that claims priority to the secondary rules provided by general law, establishing autonomous legal frameworks for specific domains.
Secondary rules encompass the creation/change of primary rules, reactions to breach, and dispute settlement mechanisms, providing comprehensive governance within the regime.
A legal system is a union of primary and secondary rules, ensuring coherence and functionality.
Self-Contained Regime as a Special Case of Lex Specialis:
Seeks precedence regarding the general law, asserting its autonomy and authority within its specific domain.
Historical Context:
The Permanent Court of International Justice used the notion of self-containedness in its very first case, the S.S. Wimbledon in 1923.
Diplomatic Law:
Identified as a self-contained regime in the Hostages case (1980), possessing its own mechanisms for addressing breaches and ensuring compliance.
Rules designed as an express deviation from the law of State responsibility, providing unique legal standards for diplomatic relations.
Provides its own system for reacting to breaches, ensuring tailored responses to violations of diplomatic norms.
Receiving State's obligations regarding facilities, privileges, and immunities, and means to counter abuse are specified, safeguarding diplomatic functions and preventing misuse.
Rationale of Self-Contained Regimes:
Countermeasures might be inappropriate or counterproductive in certain contexts, necessitating alternative mechanisms for addressing breaches.
A self-contained regime (e.g., persona non grata under diplomatic law) may be better suited to deal with breaches, providing proportionate and effective responses.
Relationship Between Self-Contained Regimes and General Law:
No legal regime is fully self-contained, as general law provides the overarching framework within which specific regimes operate.
General law functions:
Provides the normative background that comes in to fulfil aspects of its operation not specifically provided by it, complementing and supporting the functioning of special regimes.
Secondary rules of general law also operate if the special regime fails to function properly, ensuring recourse in cases of regime malfunction.
Expansion and Fragmentation of Public International Law
Expansion of International Law:
International law is undergoing a period of change and potential expansion, adapting to evolving global challenges.
A shift from custom and general principles to treaties (codification) is evident, reflecting efforts to formalize and clarify international legal norms.
The development of regional organizations and agreements demonstrates the increasing importance of regional governance in addressing specific issues.
"Soft codification" occurs in areas where agreement is difficult, allowing for the gradual development of norms through non-binding instruments.
Expansion in the adoption of these instruments is indicative of a transformation in the way that States continue to work together on different issues affecting them and their populations, rather than a demise of the conventional form of international law.
Practical enlargement of accepted forms of international law occurs despite a lack of formal recognition as a "source" of law, reflecting the evolving nature of international legal practice.
Fragmentation of International Law:
Focuses on normative conflicts that may challenge the coherence of the international legal system, raising concerns about consistency and harmony.
The emergence of closely integrated sets of rules in areas like human rights, environment, trade, and international crimes contributes to fragmentation, necessitating efforts to reconcile diverse legal regimes.
These sets often combine specific primary rules (rules laying down particular rights and obligations) with specific secondary rules (rules about rule-creation and change, responsibility, and dispute settlement) that claim autonomy from principles of general international law, complicating the overall structure of international law.
Types of Normative Conflict:
Between general law and a particular, unorthodox interpretation of general law, leading to divergent understandings of legal principles.
Between general law and a particular rule that claims to exist as an exception to it, challenging the applicability of established norms.
Between two types of special law, creating conflicts between distinct legal regimes.
Examples of Fragmentation:
Conflicting interpretations of general law, where divergent views on legal principles lead to uncertainty and inconsistency.
In the Tadic case in 1999, the Appeals Chamber of the International Criminal Tribunal of Former Yugoslavia (ICTY) considered the responsibility of Serbia-Montenegro over the acts of Bosnian Serb militia in the conflict in the Former Yugoslavia.
Contrast between Nicaragua (ICJ) and Tadic (ICTY) cases regarding the "effective control" test, illustrating conflicting interpretations of international law.
Conflicting interpretations create two types of problem:
Diminishing legal security as legal subjects are no longer able to predict official institutions' reactions to their behavior and plan accordingly.
Putting legal subjects in an unequal position vis-à-vis each other, with rights depending on the jurisdiction seized to enforce them.
The emergence of special law as an exception to the general law, complicating the application of established norms.
In the 1988 Belilos case, the ECHR viewed a declaration made by Switzerland in its instrument of ratification as a reservation, struck it down as incompatible with the Convention's object and purpose, and held Switzerland bound by the Convention "irrespective of the validity of the declaration."
European Court's view: The fundamental difference in the role and purpose of tribunals provides a compelling basis for distinguishing Convention practice from that of the International Court.Differentiation between types of special law, potentially leading to conflicting legal standards in different domains.
For example, debates on trade and the environment suggest that “environmental law” and "trade law" might be governed by different principles.
International Law as a Legal System. Difficulties Arising from Diversification
International Law as a Legal System:
Rules and principles should be interpreted against the background of other rules and principles, emphasizing coherence and interconnectedness.
Not a random collection of norms; meaningful relationships exist between them, emphasizing the importance of systematic interpretation.
Norms may exist at higher and lower hierarchical levels, with greater or lesser generality and specificity, reflecting a complex structure.
Relationships Between Norms:
Relationships of interpretation where one norm assists in the interpretation of another, and both norms are applied in conjunction, facilitating coherent application.
Relationships of conflict where two valid and applicable norms point to incompatible decisions, necessitating a choice between them.
A choice must be made between them, requiring careful consideration of legal principles.
Basic rules concerning the resolution of normative conflicts are to be found in the 1969 Vienna Convention, providing guidance for resolving conflicts of norms.
Vienna Convention:
When seeking to determine the relationship of two or more norms to each other, the norms should be interpreted in accordance with or analogously to the 1969 Vienna Convention and especially the provisions in its Art. 31 to 33 having to do with the interpretation of treaties.
Principle of Harmonization:
Several norms bearing on a single issue should be interpreted to give rise to a single set of compatible obligations, promoting coherence and consistency. When multiple norms address the same issue, they should be interpreted in a way that creates a unified and harmonious set of obligations.
Hierarchical Relations Between Norms:
The sources of international law (treaties, custom, general principles of law) are not in a hierarchical relationship inter se, recognizing the equal standing of these sources.
Some rules are more important and enjoy a superior position or special status, with some norms considered more fundamental than others.
Sometimes expressed by designating norms as "fundamental" or breaches as "grave," indicating their significance and the seriousness of violations.
Functions of Public International Law
Core Aims:
Effort to maintain peace is a central objective of public international law, seeking to prevent conflicts and promote peaceful relations among nations.
Assessment of violations of international law occurs in response to war, conflict, military aggression, terrorism, or violations of military conflict norms, ensuring accountability for breaches of international law.
Guidelines and Framework:
Establishes normative guidelines and a common conceptual framework, providing states with a roadmap for their interactions and obligations.
Guides states across a broad range of domains, including war, diplomacy, trade, and human rights, promoting adherence to international standards.
Legal Responsibilities:
Defines legal responsibilities of states in their conduct with each other, ensuring accountability for actions on the international stage.
Defines treatment of individuals within state boundaries, promoting respect for human rights and fundamental freedoms.
Scope of Issues:
Addresses a wide array of issues, including human rights, disarmament, international crime, refugees, migration, nationality, prisoners, use of force, and conduct of war, reflecting the comprehensive nature of international law.
Regulation of Global Commons:
Extends to the environment and sustainable development, international waters, outer space, global communications, and world trade, promoting responsible stewardship of shared resources and spaces.
Compatibility of Public International Law (PbIL) and Private International Law (PrIL)
Private International Law:
Regulates private legal relations with a foreign element (foreign economic transactions, family relations between citizens of different states, etc.), addressing cross-border legal issues involving individuals and businesses.
Differences Between PbIL and PrIL:
Subject of legal regulation:
PbIL regulates relations between subjects of international law beyond the jurisdiction of one State, focusing on interactions among states and international organizations.
PrIL regulates civil law, labor, marriage and family, and other social relations with a foreign or international element, addressing private legal matters with a cross-border aspect.
Subjects:
PbIL subjects include sovereign states, nations, peoples, international interstate organizations, and Vatican City-State.
PrIL subjects include foreign individuals and legal entities, international transnational corporations, with the State acting in relations with foreign natural or legal persons.Sources of law:
PbIL sources include international treaties, customs, and generally recognized principles of international law.
PrIL sources encompass treaties and customs at the international level alongside state legislation at the national level.Doctrinal Positions on Correlation:
Private international law is a branch of international law in the broad sense, with social basis in international communication and an important role for international treaties and principles.
Private international law is a part of domestic law, with relations formed within domestic legal orders, material regulation by domestic law, and protection by domestic courts.
Private international law is a “polysystemic complex” consisting of norms of international law and norms of domestic law, with an international legal nature of sources and possible escalation of disputes into inter-State disputes.
Private International Law as National Law:
Every state has its own private international law, reflecting its unique legal system and approach to cross-border legal issues.
Determines which law is applied when there are circumstances involving the law of a foreign state, resolving conflicts of laws.
A German court applies German PrIL (autonomous conflict of laws) if there are no unified international rules of substantive law, highlighting the role of national law in the absence of international harmonization.
European Law:
European law broadly refers to the law of European international organizations (Council of Europe, Nordic Council, Western European Union, etc.), encompassing the legal frameworks governing European entities.
European law in a broad sense is international law.
Originally belonged to international law but became a self-contained body of law.
Substitutes its own rules for those of international law for relations between EU Member States if they are not mandatory/imperative.
Agreements Relating to Primary EU Law Are International Treaties:
Treaty on the Functioning of the European Union (TFEU; Treaty of Rome, effective since 1958): this Treaty established the European Community (two treaties were signed (1) the Treaty establishing the European Economic Community (EEC) and (2) the Treaty establishing the European Atomic Energy Community (EAEC or Euratom))
The Treaty on European Union (TEU; Maastricht Treaty, effective since 1993)
EU law autonomy:
The EU Treaty, the TFEU, and the Charter of Fundamental Rights together correspond to the “EU Constitution,” forming the fundamental legal framework of the European Union.
Linked to its supranational character, which gives rise to direct effect and priority of application.
Provides for broad EU rule-making powers over Member States and sometimes their citizens.
Three Types of Peremptory EU Legal Acts (Art. 288 TFEU):
Regulations (постановления): Binding in its entirety and directly applicable in all Member States, ensuring uniform application of EU law across member states.
Directives (директивы): Addressed to Member States only; binding regarding the expected result, preserving freedom of national authorities; offering flexibility to member states in achieving EU objectives.
Member States to transform the Directive follows, inter alia, from the principle of EU “fidelity.”
Decisions (решения): Fully binding legal act of general application or a specific addressee, providing targeted legal instruments for specific situations.
EU and International Law:
Secondary EU law belongs to a section of law that is not part of international law and takes precedence over the law of Member States, asserting its primacy within the EU legal order.
The EU is an association of States, not a State, distinguishing it from sovereign nations.
The supranational character of the EU is still limited to internal relations; third states view the EU as an international organization, highlighting the ongoing evolution of the EU's international legal status.
Normativity of Public International Law
Structure of International Law:
Consists of norms (rules of conduct) established by agreement of subjects of international law to regulate relations between them, shaping international behavior through agreed-upon standards.
Arguments Against Normativity:
Universality: International law has treaties and customs binding only two or more states, suggesting limitations in its global applicability.
Peremptory element: Decentralization of sanctions in international law, raising questions about effective enforcement.
Rule of conduct: International law includes treaties for one-time application (treaty-transactions), indicating flexibility in its application.
Equal legal personality: International law has treaties establishing different obligations, reflecting the diversity of international agreements.
Obligations: Arise from treaties, customs, unilateral acts, decisions of international organizations, and courts, showcasing various sources of international legal obligations.
Relative Normativity (Prosper Weil):
Blurring the threshold between legal and non-legal norms, attributing normative force to acts of international organizations, challenging traditional notions of legal authority.
Variable normativity stems from hierarchy among norms (jus cogens) and dilution through erga omnes obligations, influencing the strength and scope of international legal norms.
Weil argued for voluntarism, neutrality, and positivism as essential for international law to fulfill its functions, emphasizing key principles in international legal theory.
José Alvarez:
Argues that the proliferation of soft law poses for the role and value of lawyers in global governance and the normativity of international law. However, positivism no longer enjoys the authority that it once did in international law.
Emergence of Public International Law
Foundations:
Lie in the development of Western culture and political organization, shaping the historical development of international law.
European notions of sovereignty and independent nation-states required inter-state relations in accordance with accepted standards, emphasizing the role of European ideas in international law's formation.
Periodization:
Ancient and Classical Periods (Pre-500 CE) saw the seeds of international law in ancient civilizations such as Mesopotamia, Egypt, Greece, and Rome.
Treaties, diplomatic practices, and concepts of justice and fairness emerged during this era.
The Treaty of Kadesh (1259 BCE) stands as one of the earliest known peace agreements.
Medieval Period (500–1500 CE) marked the influence of religious and feudal systems.
The Catholic Church shaped norms through canon law and the concept of a "just war," influencing international order.
Maritime customs and merchant laws (e.g., Lex Mercatoria) emerged to govern trade and maritime activities.
Renaissance and Early Modern Period (1500–1648) witnessed the rise of sovereign states and the decline of feudal and religious universalism.
Francisco de Vitoria and Hugo Grotius laid the groundwork for modern international law during this transitional period.
Grotius emphasized natural law and the need for rules in De Jure Belli ac Pacis (1625), advocating for a rules-based international system.
Westphalian Era (1648–1815) was ushered in by the Peace of Westphalia (1648), which established state sovereignty and non-interference.
Formalization of diplomatic practices and treaty-based international relations occurred during this era.
The balance of power system reinforced the need for legal frameworks to manage interstate conflicts.
19th Century (1815–1914) saw the codification and institutionalization of international law.
The Congress of Vienna (1815) promoted multilateral diplomacy and regulation of maritime law and the abolition of slavery.
The Hague Conventions (1899 and 1907) formalized laws of war and arbitration mechanisms.
Interwar Period and World War II (1919–1945) included the League of Nations (1920) as the first major attempt to create a global institution.
Limitations were evident with the outbreak of World War II, highlighting challenges in maintaining peace.
The Nuremberg and Tokyo Trials established individual accountability for war crimes after the war.
Post-World War II and Modern Era (1945–Present) began with the United Nations (1945), which became the cornerstone of the modern international legal system.
The UN Charter codified the prohibition of the use of force and the promotion of human rights, underscoring the UN's role in maintaining peace and promoting human dignity.
The establishment of the International Court of Justice (ICJ) and the development of international human rights law, environmental law, and international criminal law (e.g., the International Criminal Court) reflect the expanding scope of international law in addressing global challenges.
Emergence of Science of International Law
Precursors (Ancient and Medieval Periods):
Early thinkers and practices laid the groundwork for the science of international law.
Ancient Greek and Roman philosophers discussed natural law and justice, contributing to the ethical foundations of international law.
Medieval scholars contributed to the concept of a "just war" and the moral foundations of law.
Renaissance and Systematic Thought (16th Century):
A shift toward secular and humanistic thinking laid the foundation for systematic analysis of international law.
Francisco de Vitoria is regarded as one of the earliest systematic thinkers, addressing the rights of indigenous peoples and the legality of war and grounding his arguments in natural law.
Alberico Gentili advanced the field with De Jure Belli (1598), emphasizing secular and practical aspects of international law.
Hugo Grotius and Formalization (17th Century):
Hugo Grotius is considered the "father of international law" due to his seminal work in formalizing international legal principles.
His work, De Jure Belli ac Pacis (1625), systematically organized principles of international law by combining natural law with practical state practice, emphasizing the importance of reason, justice, and the need for rules to govern state behavior, even in times of war.
Enlightenment and Codification (18th Century):
A focus on reason, progress, and codification of laws characterized the Enlightenment era.
Thinkers like Emer de Vattel (1714–1767) built on Grotius's work, making international law more accessible and practical for statesmen and diplomats.
Vattel's The Law of Nations (1758) became a key reference, emphasizing the sovereignty and equality of nations as foundational principles of international law.
Westphalian Era (1648–1815)
Landmark moment: Peace of Westphalia (1648).
Ended the Thirty Years' War in the Holy Roman Empire and the Eighty Years' War between Spain and the Dutch Republic.
Established state sovereignty, meaning each state had the right to govern its territory without external interference.
Established non-interference in domestic affairs, reinforcing the principle of state autonomy.
Formalization of diplomatic practices.
Defined the roles and functions of ambassadors and diplomatic envoys.
Promoted the use of treaties as a primary means of conducting international relations.
Growth of treaty-based international relations.
States began to rely more heavily on formal agreements to manage their interactions.
Treaties covered a wide range of issues, including trade, alliances, and territorial boundaries.
Balance of power system in Europe.
Aimed to prevent any single state from dominating the continent.
Encouraged states to form alliances and counter-alliances to maintain equilibrium.
Reinforced need for legal frameworks to manage interstate conflicts.
Highlighted the importance of international law in regulating state behavior.
Led to the development of new legal principles and norms.
19th Century (1815–1914)
Codification and institutionalization of international law.
Efforts to organize and systematize international legal principles.
Growth of international organizations and institutions.
Congress of Vienna (1815).
Reorganized Europe after the Napoleonic Wars.
Promoted multilateral diplomacy as a way to resolve international disputes.
Regulation of issues like maritime law and abolition of slavery.
Hague Conventions (1899 and 1907).
Marked early efforts to formalize laws of war and arbitration.
Addressed issues such as the treatment of prisoners of war, the use of certain weapons, and the protection of civilians during armed conflict.
Interwar Period and World War II (1919–1945)
League of Nations (1920).
First major attempt at creating a global institution to enforce international law and maintain peace.
Aimed to prevent future wars through collective security and disarmament.
Limitations became evident with the outbreak of World War II.
Nuremberg and Tokyo Trials after the war.
Established principles of individual accountability for war crimes and crimes against humanity.
Held high-ranking officials of Nazi Germany and Imperial Japan responsible for their actions during the war.
Post-World War II and Modern Era (1945–Present)
United Nations (1945).
Cornerstone of the modern international legal system.
UN Charter codifying principles like:
Prohibition of the use of force, except in cases of self-defense or with Security Council authorization.
Promotion of human rights and fundamental freedoms for all.
Establishment of the International Court of Justice (ICJ), serving as the principal judicial organ of the UN.
Development of international human rights law, environmental law, and international criminal law (e.g., the International Criminal Court).
Reflecting the expanding scope of international law in addressing global challenges.
Human rights law has led to the creation of numerous treaties and conventions aimed at protecting individuals from abuses by their own governments.
Emergence of the Science of International Law: Precursors (Ancient & Medieval Periods)
International law as a formal discipline did not exist, but early thinkers and practices laid the groundwork.
Ancient Greek and Roman philosophers, such as Aristotle and Cicero, discussed natural law and justice, which later influenced international legal thought.
Medieval scholars, including St. Augustine and Thomas Aquinas, contributed to the development of concepts like "just war" and the moral foundations of law, blending religious and philosophical ideas.
Renaissance and the Birth of Systematic Thought (16th Century)
The Renaissance marked a shift toward secular and humanistic thinking, creating an intellectual environment conducive to the study of international relations and law.
Francisco de Vitoria (1483–1546).
A Spanish theologian and jurist.
Regarded as one of the earliest systematic thinkers in international law.
Works, such as De Indis and De Jure Belli, addressed issues like the rights of indigenous peoples and the legality of war, grounding his arguments in natural law.
Alberico Gentili (1552–1608).
An Italian jurist.
Advanced the field with his work De Jure Belli (1598), which emphasized the secular and practical aspects of international law, separating it from theological influences.
Hugo Grotius and the Formalization of International Law (17th Century)
Hugo Grotius (1583–1645).
Widely considered the "father of international law."
A pivotal figure in the emergence of the science of international law.
His seminal work, De Jure Belli ac Pacis (1625), systematically organized principles of international law, combining natural law with practical state practice.
Grotius emphasized the importance of reason, justice, and the need for rules to govern state behavior, even in times of war.
His work laid the foundation for the modern discipline of international law.
Advocated for the concept of freedom of the seas, arguing that no nation had the right to control the oceans.
Enlightenment and the Codification of International Law (18th Century)
The Enlightenment brought a focus on reason, progress, and the codification of laws.
Thinkers like Emer de Vattel (1714–1767) built on Grotius's work, making international law more accessible and practical for statesmen and diplomats.
Vattel's The Law of Nations (1758) became a key reference for states, emphasizing the sovereignty and equality of nations while providing a systematic framework for international legal principles.
19th Century: Institutionalization and Professionalization
The 19th century saw the formal institutionalization of international law as a science.
Academic chairs, scholarly journals, and professional associations dedicated to international law reflected its growing recognition as a distinct field of study.
The Hague Conventions (1899 and 1907) and the creation of the Permanent Court of Arbitration (1899) marked significant steps in the practical application of international legal principles.
Scholars like Lassa Oppenheim (1858–1919) contributed to the professionalization of the field with works like International Law: A Treatise (1905), which became a standard reference for the discipline.
20th Century: Expansion and Globalization
The 20th century witnessed the rapid expansion of international law as a science, driven by the need to address global challenges such as war, human rights, and environmental issues.
The establishment of the United Nations (1945) and the International Court of Justice (ICJ) provided institutional frameworks for the development and enforcement of international law.
The field diversified into specialized areas, such as human rights law, international criminal law, and environmental law, reflecting the increasing complexity of global governance.
21st Century: Contemporary Challenges and Interdisciplinary Approaches
Today, the science of international law continues to evolve, addressing emerging issues like cyber warfare, climate change, and global health.
Interdisciplinary approaches, combining insights from political science, economics, and sociology, have enriched the study of international law, making it a dynamic and evolving discipline.
Emergence of Classical International Law
Emerged during the early modern period (16th–19th centuries), influenced by the Peace of Westphalia (1648), which established the principles of state sovereignty and territorial integrity.
Key developments include:
Natural Law Influence: Early scholars like Hugo Grotius (1583–1645), in his work De Jure Belli ac Pacis (1625), combined natural law with state practice, laying the foundation for modern international law.
Westphalian System: The Treaty of Westphalia (1648) ended the Thirty Years' War and formalized the concept of sovereign equality among states.
Positivist Shift: By the 18th–19th centuries, international law became more state-centric, emphasizing treaties and customary practices over natural law.
Sources of Classical International Law
The primary sources were later codified in Article 38 of the Statute of the International Court of Justice (ICJ), but classical international law recognized:
Treaties (Conventions) – Binding agreements between states (e.g., Congress of Vienna treaties, 1815).
Customary International Law – General state practice accepted as law (opinio juris), such as diplomatic immunity.
General Principles of Law – Common legal principles recognized by civilized nations (e.g., pacta sunt servanda – agreements must be kept).
Scholarly Works (Jus Gentium) – Writings of jurists like Grotius, Vattel, and Pufendorf were highly influential.
Main Branches of Classical International Law
Law of Nations (Jus Gentium)
Governed relations between sovereign states (e.g., recognition of states, treaties).
Law of War (Jus ad Bellum & Jus in Bello)
Regulated when war could be justly waged (jus ad bellum) and how it should be conducted (jus in bello).
Key concepts: neutrality, prisoners of war, occupation.
Diplomatic & Consular Law
Rules on diplomatic immunity, embassy protections, and state representation (e.g., Congress of Vienna, 1815).
Law of the Sea
Early rules on maritime boundaries, freedom of navigation, and piracy (e.g., Mare Liberum by Grotius, 1609).
State Responsibility
Principles governing state liability for wrongful acts (e.g., reparations for breaches of international law).
Recognition of States & Governments
Criteria for recognizing new states (e.g., declaratory vs. constitutive theory).
Key Treaties & Developments
Peace of Westphalia (1648) – Birth of modern state sovereignty.
Congress of Vienna (1815) – Codified diplomatic law and balance of power.
Hague Conventions (1899 & 1907) – Early laws of war and neutrality.
Transition to Modern International Law
Classical international law evolved into modern international law in the 20th century with:
The League of Nations (1919) and later the United Nations (1945).
The ICJ and the development of human rights law and international criminal law.
Conclusion
Classical international law laid the groundwork for today’s global legal order by establishing state sovereignty, treaties, and customary law as key pillars.
While it was Eurocentric and state-focused, its principles remain influential in contemporary international law.
World War II as a Turning Point in the Development of Public International Law
The Post-War Era 1945–59
The Failure of the Pre-War Legal System:
The interwar political system, notably the League of Nations, is seen as failing because it relied too heavily on legal mechanisms to ensure peace and justice.
The absence of Great Powers from key moments and the inability to enforce its laws contributed to its downfall.
The League’s attempt to use legal rules to ensure peace faced significant barriers, especially in terms of collective security and disarmament.
Legal equality among members, such as the unanimity requirement, hindered effective action.
Rise of “Realism” and Shifting Legal Thought:
In the 1940s, many diplomats and legal scholars turned toward realism, which emphasized the limitations of law in a politically divided world.
They argued that law could not oppose power but must work with it.
The post-war world, defined by the ideological conflict between the USA and the Soviet Union, created a context where international law needed to accommodate power structures.
The Cold War made legal approaches more pragmatic, focusing on coexistence rather than ideological confrontation.
Despite these constraints, by the 1950s, the Soviet Union had largely shifted from opposing international law to pragmatically accepting it as part of peaceful coexistence.
This led to the development of procedural rules to manage inter-block relations.
International Law as a Tool for National Interests:
In the U.S., international law began to be viewed as a tool to pursue American values and foreign policy objectives (lawyers around Yale Law School).
This instrumental approach reflected a broader shift in legal thought towards using law to achieve political goals, especially considering the realist perspective.
This approach was influenced by European refugees who brought political realism to U.S. law schools, and it diverged from the traditional understanding of law as a static set of rules, pushing for a more policy-oriented framework.
Some U.S. legal thinkers still critiqued sovereignty as an obstacle to a world order governed by law, but most post-war scholars focused on how to use sovereignty to advance international stability.
Legal Thought in Europe and Regional Integration:
In Europe, legal thinking adapted to the new political realities, with an emphasis on regional integration rather than traditional international law doctrines.
European lawyers played key roles in establishing organizations like the Council of Europe and the European Economic Community (EEC), emphasizing functional cooperation, such as human rights protection and economic integration, as paths to peace and security.
Legal-formalist interpretations of the United Nations Charter (e.g., Kelsen) persisted in Europe, but there was also a growing interest in innovative theories like functional integration (e.g., Mitrany) that supported peaceful coexistence and economic cooperation.
The South: Decolonization and the Rise of New Legal Perspectives:
In the global South, the movement toward decolonization led to growing opposition to Western dominance, and international law was often viewed as a tool of colonialism.
The focus in the South shifted toward national liberation, with legal reforms geared more toward administrative modernization and economic development, such as through import substitution.
The Non-Aligned Movement (NAM), which emerged in the 1950s, aligned more closely with Soviet pragmatism than Western ideals.
Legal Doctrine
Academic Focus:
Legal writings were largely divided into two directions:
Procedural Rules: Scholars, particularly in Europe (e.g., Brierly), focused on international cooperation in less confrontational areas, such as diplomacy.
Power Politics: Other scholars (e.g., Corbett, de Visscher, Schwarzenberger) analyzed international law sociologically, emphasizing power dynamics in the global system.
Sovereignty and Statehood:
The critique of state sovereignty from the inter-war period persisted but became more nuanced.
Western lawyers (e.g., McDougal, Stone) emphasized using sovereignty to achieve credible diplomatic accounts and legal reforms.
Sovereignty was also crucial for Soviet and third-world states, who viewed it as a defense against Western domination.
Recognition of states was seen as a political act, not a legal one, with statehood being a sociological process (e.g., Chen, Lauterpacht).
Human Rights and Humanitarian Law:
Post-war, there was a push to protect individuals, with Western lawyers advocating for including individuals as subjects of international law (e.g., Lauterpacht).
However, the UN Charter and the Universal Declaration of Human Rights (1948) remained non-binding.
The Geneva Conventions (1949) made significant strides in humanitarian law, focusing on the protection of wounded, sick, prisoners of war, and civilians.
International Criminal Law:
The Nuremberg Trials (1945 – 1946) introduced crimes against peace and crimes against humanity, leading to the UNGA’s non- binding resolution on the Nuremberg Principles (1950).
Despite efforts by the International Law Commission (ILC), there was little progress in establishing international criminal law during this period.
Multilateral Treaties and Legal Pragmatism:
Multilateral treaties were seen as international legislation (e.g., Jenks), reflecting the anti-imperialist and sovereignty-driven stance of socialist and third-world countries.
Treaties were increasingly viewed as the main source of international law, contrasting with traditional customary law.
A notable success was the ILC's work on the Law of the Sea conventions (1958), which aimed to codify traditional international law.
Expansion of International Law (1960–84)
Legal Climate and New International Law:
The 1960s saw the emergence of a “new” international law, with socialist and third world countries advocating for a shift in international law, focusing on the concerns of the Global South.
The Western response was mixed, with concerns about UNGA resolutions being seen as a form of international legislation, challenging traditional international law.
The principles of sovereignty, sovereign equality, and non-intervention were emphasized, especially by new and socialist states, though these principles were rooted in traditional European public law (e.g., Vattel).
The debate centered on how these principles should be applied and exceptions allowed.
Decolonization and Sovereignty:
Decolonization became a key principle in international law, formalized by the UN Declaration on Decolonization (1960), providing legal support for the independence of European colonies.
Third world countries extended sovereignty claims to regulate private transnational activities, starting with the Declaration on Permanent Sovereignty over Natural Resources (1962).
The New International Economic Order (NIEO) sought to reform international economic transactions for distributive justice, with efforts culminating in the Charter of Economic Rights and Duties of States (1974).
Human Rights and Legal Developments:
Human rights law progressed with the adoption of key covenants: International Covenant on Civil and Political Rights (ICCPR) and International Covenant on Economic, Social, and Cultural Rights (IESCR) in 1966.
Additional human rights conventions followed, focusing on racial discrimination, women's rights, and torture.
Regional human rights frameworks, such as the Conference on Security and Cooperation in Europe (CSCE, 1975), became important platforms for monitoring human rights violations in socialist countries.
International Environmental Law:
The Stockholm Conference (1972) marked the start of a global effort in environmental law, with the Stockholm Declaration emphasizing states' responsibility not to harm areas outside their jurisdiction.
Several treaties were adopted, including the Vienna Convention on the Ozone Layer (1985) and the Montreal Protocol (1987).
Regional agreements, like the Convention on Long-Range Transboundary Air Pollution (1979), furthered environmental protection efforts.
US Imperial Activities and International Law:
The Cuban Missile Crisis (1962) and US military actions, such as the invasion of the Dominican Republic (1965) and Nicaragua intervention (1980s), were viewed as violations of international law, particularly sovereignty and non-intervention principles.
The ICJ condemned the US in the Nicaragua v. United States case (1986) for violating international law, marking a significant moment in reinforcing international consensus on the use of force under the UN Charter.
Military Conflicts and Legal Implications:
The Vietnam War (1965–75), Soviet interventions in Czechoslovakia (1968) and Afghanistan (1979–89), and conflicts involving Israel were notable for their limited application of international legal rules on the use of force.
The Palestinian conflict became a central issue for the application of humanitarian law in international debates.
Legal doctrine
Global Expansion of Doctrinal Debates
The doctrinal debates of the inter-war period expanded globally by 1960, becoming a platform for legal discussions beyond Europe and the US.
Key Issue: tension between formalist and realist approaches, especially concerning peace, security, economic, and social issues (Friedmann).
Lawyers adopted a “welfarist” view of international law, emphasizing its potential in economic, social, and human rights fields.
Despite challenges, international law was seen as a tool for managing global problems due to growing interdependence.
Mainstream International Law and the Role of the UN
Lawyers advocated for a legal system akin to domestic welfare states, where UN bodies played a critical role in legal development (e.g., Mosler, Cheng, Arangio-Ruiz).
Specialization emerged in fields like human rights, trade, and environmental law, with professionals identifying themselves as experts in these areas.
Legal education moved toward integrating institutional law and specialized rule systems, with new textbooks blending traditional topics with emerging ones like environmental law and human rights (Bowett, Schermers).
European Legal Developments
European Law: the doctrines of supremacy and direct effect solidified, changing the nature of the European Communities and their treaties (Weiler).
The European Court of Justice (ECJ) began to develop significant jurisprudence on fundamental rights and its relations with the European Convention on Human Rights (ECHR), particularly in the 1970s.
Despite weaknesses in political cooperation, human rights law evolved in Europe, especially through the ECJ’s rulings on rights like privacy, freedom of speech, and fair trial.
Third World Legal Perspectives
Third World lawyers gained visibility, particularly in UN debates, focusing on economic law and sovereignty over natural resources (Bedjaoui).
Key issues included nationalization of foreign property, international commodity agreements, and the regulation of multinational companies.
US Legal Landscape
In the US, lawyers from liberal academic backgrounds (Harvard, Columbia, NYU) adapted to the welfarism of their European and Third World counterparts, often playing a leading role in international organizations.
However, US government positions diverged significantly from academic views, particularly on imperial actions like the Vietnam War and interventions in Latin America.
President Reagan’s refusal to sign the 1982 UN Law of the Sea Convention exemplified the gap between the academic and political establishments, with the US international law community often opposing its government’s foreign policy (Kennedy, Hoffmann).
Contemporary Public International Law
Evolution of International Law in the Modern Era
International law has developed significantly over the past century, reflecting the complexities and challenges of modern life. As a product of its environment, it adapts to the social, economic, and political values of the global community.
To remain relevant, international law must balance the need to incorporate new standards and realities while maintaining the stability of the existing legal framework. This tension between established rules and evolving forces is a central challenge for the system.
The advent of nuclear weapons, for example, created a balance of terror that reshaped international security dynamics.
Similarly, technological advancements, such as deep-sea mining, cyber warfare, and space exploration, have introduced new legal questions.
The rise of international terrorism has further complicated the landscape, requiring states and international organizations to address security concerns while respecting sovereignty and human rights.
More recently, global health crises like the COVID-19 pandemic have underscored the need for robust international legal frameworks to manage emergencies that transcend national borders.
Expanding Scope of International Law
The scope of international law has broadened considerably, moving beyond its traditional focus on peace and security to address a wide range of contemporary issues. It now encompasses areas such as space exploration, ocean resource management, human rights protection, international finance, and cybersecurity.
While the preservation of peace remains a central concern, international law has evolved to reflect the interconnected nature of modern global life.
This expansion reflects the growing recognition that many challenges—such as environmental degradation, economic inequality, and technological innovation—require coordinated international responses.
As a result, international law has become a multifaceted system that seeks to regulate and harmonize diverse interests across the global community.
State-Centric Nature of International Law
At its core, international law remains rooted in the state-centric nature of global politics.
States, as the primary repositories of organized hopes and aspirations, have shaped the system to enshrine values such as non-intervention, territorial integrity, the non-use of force, and the equality of states. These principles are foundational to the international legal order and are reflected in institutions like the United Nations, where all member states have equal voting rights in the General Assembly.
However, the state-centric framework is increasingly challenged by cross-border issues that transcend national boundaries.
Economic inequality, human rights concerns, global health crises, and technological advancements create tensions that cannot be resolved solely through traditional state-based mechanisms. This has led to a growing recognition of the need for international law to address both state interests and global concerns.
Role of Non-State Actors
International law has gradually expanded its scope to include non-state actors, such as individuals, groups, and international organizations. This shift reflects the growing complexity of global interactions and the recognition that states alone cannot address all international challenges.
Individuals, for example, are now recognized as having rights and responsibilities under international law, as seen in the establishment of international criminal tribunals like the Nuremberg and Tokyo Trials, the International Criminal Court (ICC), and human rights conventions such as the Universal Declaration of Human Rights (1948) and the European Convention on Human Rights (1950).
International organizations, too, have gained prominence as subjects of international law.
The United Nations, with its 193 member states, plays a central role in diplomatic relations, norm creation, and international cooperation. Regional organizations, such as the African Union, the Organization of American States, and the European Union, have also contributed to the development of international law by creating regional subsystems within the broader global framework.
Rise of International Organizations
The growth of international organizations marks a defining feature of modern international law.
These organizations, particularly the United Nations, have become essential actors in the international system. The UN’s Security Council, for instance, has the unique authority to adopt binding resolutions on member states, making it a powerful force in maintaining international peace and security.
Regional organizations have also played a significant role in shaping international law. While some, like NATO and the Warsaw Pact, were established for military security, others, such as the European Union, have focused on economic coordination and standardization.
The EU, in particular, represents a model of regional integration, with a growing bureaucracy and a range of common institutions that influence both regional and global legal norms.
Diversification of International Legal Topics
The range of topics covered by international law has expanded alongside the increasing complexity of global challenges. Beyond traditional concerns like territorial disputes and state sovereignty, international law now addresses issues such as human rights, international trade, environmental protection, space exploration, and the governance of international institutions.
This diversification reflects the growing interdependence of the global community and the need for legal frameworks to manage shared challenges.
Globalization, in particular, has driven many of these developments. The movement toward greater economic, cultural, and technological interdependence has created new opportunities and challenges, from the regulation of international trade to the protection of human rights and the environment. These issues often intersect, leading to debates over how to balance competing interests, such as free trade versus environmental sustainability.
Challenges and Future Directions
As international law continues to evolve, it faces the challenge of balancing state sovereignty with the need to address global concerns.
The rise of democracy and human rights as countervailing forces to traditional state-centric principles has added complexity to this balancing act.
At the same time, the system must remain flexible enough to adapt to new realities, such as technological advancements, global health crises, and the shifting dynamics of international relations.
The future of international law will likely involve greater integration of non-state actors, increased emphasis on global cooperation, and the development of new legal frameworks to address emerging challenges. By navigating these complexities, international law can continue to serve as a vital tool for promoting peace, justice, and cooperation in an increasingly interconnected world.
New Approaches:
Positive Law and Natural Law
The debate between positive law and natural law has been a central theme in legal philosophy, reflecting the tension between idealism and realism.
Positive law, rooted in the 19th-century positivist school, focuses on analyzing law as it exists, detached from ethical considerations. This approach, exemplified by Hans Kelsen’s "Pure Theory of Law," views law as a normative science, where rules derive their validity from a hierarchical structure of norms, culminating in a "basic norm."
Kelsen’s theory, while logically consistent, struggles to explain the binding nature of international law, particularly in the absence of strong legislative and enforcement mechanisms.
In contrast, natural law emphasizes ethical and moral principles as foundational to legal systems.
The revival of natural law, particularly after the atrocities of World War II, has influenced international law by reinforcing principles such as human rights, non-aggression, and justice.
Natural law theories, whether rooted in religious or secular ethics, argue that laws contrary to fundamental moral principles are inherently unjust, even if legally valid.
Kelsen’s Pure Theory of Law
Kelsen’s theory posits that law is a system of norms, each deriving its validity from a higher norm, ultimately grounded in a "basic norm."
In international law, Kelsen identifies the basic norm as the principle that states ought to behave as they customarily have, with pacta sunt servanda (agreements must be kept) as a cornerstone.
However, this approach has been criticized for its circular reasoning and inability to account for the progressive development of international law through new practices.
Kelsen’s monist perspective, which views international and municipal law as part of a single, interlocking system, has also been influential. According to this view, international law is supreme, and municipal law derives its validity from it. This perspective, however, faces challenges in reconciling the decentralized nature of international law with the centralized structures of national legal systems.
H.L.A. Hart’s Concept of Law
H.L.A. Hart built on Kelsen’s ideas but introduced a more sociological approach.
Hart distinguished between primary rules (standards of behavior) and secondary rules (rules about rules, such as those governing change and adjudication).
He argued that primitive legal systems, like international law, lack secondary rules, making them less sophisticated and more reliant on primary rules.
Hart viewed international law as a "set of rules" rather than a fully developed legal system, though he acknowledged the potential for future evolution.
Sociological and Realist Approaches
The sociological school, led by thinkers like Roscoe Pound, views law as a tool for social engineering, balancing competing interests within society.
This approach emphasizes the functional role of law in addressing social needs and reflects a shift from abstract legal theory to empirical studies of how law operates in practice.
The realist school takes this further, focusing on the behavior of legal officials and the practical application of law.
Realists argue that legal rules are not the heart of the legal system; rather, the decisions of judges and policymakers, influenced by social and political factors, are what truly shape the law. This perspective has been particularly influential in the United States, where law is seen as a dynamic process for effecting social change.
Behavioral and Policy-Oriented Approaches
The behavioral approach to international relations, influenced by psychology, anthropology, and sociology, examines the decision-making processes of states and other actors. This method, which includes systems analysis and game theory, seeks to understand international law as part of a broader social process. It emphasizes the interaction of states within the international system and the role of power, communication, and capabilities in shaping legal norms.
The policy-oriented approach, championed by Myres McDougal, views international law as a dynamic process of decision-making rather than a static set of rules. McDougal’s framework emphasizes the role of authoritative decision-makers and the values they seek to maximize, such as power, wealth, and human dignity. This approach has been criticized for minimizing the role of legal rules and for its potential subjectivity in applying value-based concepts like "human dignity."
Legitimacy and Fairness in International Law
Thomas Franck introduced the concept of legitimacy as a key factor in explaining why states comply with international law.
According to Franck, legitimacy depends on four properties: determinacy (clarity of rules), symbolic validation (authority approval), coherence (consistency), and adherence (alignment with a hierarchy of rules).
Franck argues that legitimate rules exert a "pull to compliance" because states perceive them as fair and just.
Franck also highlights the growing importance of individual rights in international law, reflecting a global shift toward recognizing personal autonomy and human dignity. This trend is evident in the expansion of international human rights law and the increasing protection of individual rights against state power.
Critical Legal Studies and New Approaches
The critical legal studies (CLS) movement challenges traditional theories of international law, arguing that they often reflect the power dynamics of dominant states. CLS scholars, such as Martti Koskenniemi, critique the liberal foundations of international law, which they argue are inherently contradictory and biased toward powerful actors.
They emphasize the indeterminacy of legal rules and the need to analyze law in its specific social and economic functions