Detailed notes on International Law, General Principles, and Judicial Decisions

General Principles as a Source of Law

• The potential existence of 'parallel obligations' was confirmed by the ICJ in Nicaragua. The case established that the use of interstate force is governed by both the UN Charter and customary international law, with both norms retaining separate existences.

• Treaty-based obligations can mirror obligations in customary international law if the treaty has a 'crystallizing' effect, whereby its content evolves into customary law.

  • Example: In The Wall, the ICJ indicated that the provisions of the 1907 Hague Regulations eventually became customary law.

• In instances where a treaty consists of both codification of established customary law and progressive developments, non-parties are only bound by the customary law already in effect. If state practice aligns with the progressive aspects of the treaty, these can also become binding as customary international law for non-parties.

• When treaty-based and custom-based obligations are identical, they complement each other. Inconsistent obligations may sometimes be reconciled through interpretation; however, if irreconcilable, precedence must be established:

  • If one norm is peremptory/jus cogens, it prevails.

  • Treaties usually take precedence over custom among parties to the treaty. However, if the customary rule developed post-treaty inconsistency, the principle of lex posterior applies: the later norm prevails.

  • The lex specialis principle dictates that a more specific norm will prevail over a general one.

General Principles as a Source of Law

• Article 38 references 'general principles of law recognized by civilized nations' as a third source. These principles are often utilized by judges, particularly in cases where existing law fails to provide clear solutions.

• Purpose of General Principles:

  • Primarily act as 'gap fillers' for disputes unresolved by treaties or customary law.

  • The aim was to avoid 'non liquet' situations, where legal ambiguities preclude dispute resolutions.

  • The phrase 'recognized by civilized nations' limits these principles to those common within developed national legal systems to ensure judicial impartiality.

• Key General Principle:

  • Equity: Referenced heavily by the ICJ, particularly in maritime delimitation cases.

    • Example: In Diversion of Water from the Meuse, Judge Hudson stated that equity forms part of international law. The ICJ has consistently confirmed that equity serves to enhance substantive legal rule application.

    • In Maritime Delimitation in the Black Sea, the Court emphasized achieving an equitable delimitation instead of mere equal area sharing.

• Good Faith Principle:

  • International law mandates honest compliance by states with their obligations, highlighted in the Nuclear Tests Cases.

• Principle of Pacta Sunt Servanda:

  • International agreements are binding. The ICJ in Nicaragua stated that Common Article 3 of the Geneva Conventions represent essential humanitarian norms.

• The concept of 'elementary considerations of humanity' was stressed in both the Nuclear Weapons case and in the Corfu Channel case where Albania was deemed to have violated maritime communication freedom.

• No Harm Principle:

  • Related to international environmental law concerning states' obligations to prevent harm to others.

  • Regarding China's early COVID-19 response, it illustrates due diligence obligations.

    • The due diligence principle necessitates proactive measures to prevent transboundary harm, not guaranteeing outcomes but requiring states to act sufficiently.

• Res Judicata Principle:

  • Cite in the Genocide case, highlighting that court decisions must be final.

Judicial Decisions

Introduction

• Judicial decisions serve as a subsidiary source of law per ICJ's Statute, article 38(1)(d).

• ICJ decisions bind only the parties involved but carry interpretative authority.

ICJ Decisions and Contributions

• As UN's principal judicial organ, the ICJ's judgments significantly shape international law, although they primarily identify law rather than create it. The distinction can be subtle, as some decisions may evolve legal precedents.

• Example: In Genocide Reservations, the Court introduced a new perspective on treaty reservations.

• If jurisdiction is established, ICJ resolves submitted disputes. Judgments on contentious cases are binding and non-appealable. They are made by majority vote and judges can express separate or dissenting opinions.

• The Court does not need to follow its earlier judgments strictly; however, it generally seeks consistency, sometimes using prior cases as starting points.

• Provisional measures can be adopted to protect parties' rights until final decisions are rendered and are binding.

• Advisory opinions do not resolve specific disputes but assist relevant bodies in understanding legal questions, having significant interpretive implications.

Arbitration Decisions

• Judicial outcomes, often termed 'awards,' from international arbitration also elucidate international law's nuances, examples being:

  • The Alabama Claims arbitration.

  • The Island of Palmas case.

  • The Trail Smelter case.

  • The South China Sea Arbitration (July 2016) on artificial islands.

Decisions from Other International Courts and Tribunals

• Judicial contributions from various specialized international courts such as IMT (Nuremberg), ICTY, ICC, and ITLOS, hold interpretative merit.

Decisions by National Courts

• National courts, particularly high courts, offer insights as they can reflect international obligations and contribute to customary international law development.

  • Notably cited cases include:

    • Quebec's self-determination (Canadian Supreme Court).

    • Eichmann's trial in Jerusalem.

    • State immunity cases impacting limits on state representatives.

Scholarly Contributions and the ILC

• The teachings of esteemed legal scholars hold the least weight among the sources listed in Article 38.

• Historical figures like Suarez, Grotius, and Vattel influenced international law, but contemporary academic contributions are less frequently cited by courts.

• Noteworthy contributions may still arise, such as the ICRC's commentaries on the Geneva Conventions.

• The ILC, formed in 1947, is pivotal in promoting international law development, including drafting notable conventions.

Unilateral Statements

• Case law demonstrates that unilateral declarations from state authorities can create binding obligations. Form is not essential; both oral and written declarations can hold legal power.

  • Noteworthy cases:

    • The PCIJ's Interpreting of a Norwegian declaration as binding in Eastern Greenland.

    • Nuclear Tests Cases identified unilateral public statements by French officials as legally binding commitments.

• Such statements must be examined for clarity and specificity, as ambiguous declarations are not actionable under international law.

Hierarchy of Sources

• National legal systems typically encapsulate a hierarchy of norms; however, international law is largely horizontal regarding normative equality.

• Conflicts between norms generally do not invoke inherent hierarchies but instead depend on determining which norm prevails in specific contexts.

  • Treaties often prevail because they reflect deliberate legislative authority.

Exceptions to Normative Equality:

1. Peremptory Norms (Jus Cogens):

   • Article 53 of the VCLT denotes treaties conflicting with these norms as void.

   • e.g., the prohibition of genocide.

2. Erga Omnes Obligations:

   • Norms owed to the international community at large, allowing any state to invoke them.

   • Example: The ICJ emphasized the state's legal interest in the genocide prohibition.

3. UN Charter Obligations:

   • Article 103 stipulates that Charter obligations prevail over other agreements.

• The interaction of these three categories demonstrates complex normative structures within international law, guiding how legal obligations and laws interconnect and conflict.