Introduction to International Relations: Core Concepts, Theories, and Debates

Comprehensive vocabulary flashcards covering the core concepts, theories, and empirical debates across introductory international relations, classical and structural realism, rationalist explanations of war, liberalism and domestic politics, and neoliberal institutionalism.

International System

A set of interrelated units whose components interact in a regular, patterned way.

Structure (International System)

The configuration of units within an international system that constrains behavior and explains why different actors in similar situations act similarly.

Anarchy

The structural ordering principle of international politics denoting the absence of an overarching central authority or world government above sovereign units.

Anarchical Society

Hedley Bull's concept that sovereign states, despite operating under anarchy without a global government, form a society bound by shared rules and common institutions.

Rationality (Keohane)

The assumption that international actors possess consistent, ordered preferences and calculate the costs and benefits of alternative actions to maximize utility.

Bounded Rationality

Herbert Simon's concept that decision-makers face cognitive limits, incomplete information, and constrained time, leading them to satisfice rather than optimize.

International Actor

Any individual, group, or body whose decisions and actions produce observable repercussions for international politics.

State

A distinct political and legal unit defined by two fundamental characteristics: territoriality and sovereignty.

Montevideo Criteria

The four legal qualifications for statehood under the 1933 Convention on the Rights and Duties of States: a permanent population, a defined territory, a government, and the capacity to enter into relations with other states.

Declarative Theory of Statehood

The legal doctrine that an entity becomes a state as an objective matter of fact upon meeting specific qualifications, with recognition functioning merely as an acknowledgment.

Constitutive Theory of Statehood

The legal and political doctrine that an entity attains statehood exclusively through the discretionary political act of recognition by other states.

Domestic Sovereignty

Stephen Krasner's category of sovereignty referring to the exclusive legal and administrative authority exercised by public bodies within a defined territory.

Interdependence Sovereignty

Stephen Krasner's category of sovereignty referring to the capacity of public authorities to regulate cross-border flows of goods, information, and people.

International Legal Sovereignty

Stephen Krasner's category of sovereignty defined by the formal mutual recognition extended among independent territorial entities.

Westphalian Sovereignty

Stephen Krasner's category of sovereignty asserting the complete exclusion of external authoritative actors from domestic authority structures.

Quasi-State

Robert Jackson's term for an entity that possesses international legal sovereignty, including diplomatic recognition and a UN seat, but lacks effective domestic sovereignty and governing capabilities.

Power (Dahl)

The relational ability of Actor A to induce Actor B to execute an action that Actor B would not otherwise perform.

Soft Power

Joseph Nye's term for the ability to obtain preferred political outcomes through attraction and co-optation rather than coercion or payment, grounded in culture, political values, and legitimate policies.

Compulsory Power

Barnett and Duvall's taxonomy of power where one actor exercises direct material or coercive control over the immediate actions of another.

Institutional Power

Barnett and Duvall's taxonomy of power where an actor exerts indirect control over another through established rules, procedures, and institutional agendas.

Structural Power

Barnett and Duvall's taxonomy of power where co-constitutive direct social relations determine the asymmetric capacities, positions, and identities of actors.

Productive Power

Barnett and Duvall's taxonomy of power operating through diffuse social discourses and categories to shape what actors perceive as conceivable, legitimate, or desirable.

Levels of Analysis

A methodological framework establishing distinct analytical perspectives—such as the individual, state, and international system—to locate the causes of international events.

Waltz's Three Images

Kenneth Waltz's tripartite categorization of the causes of war: the first image (human nature and individuals), the second image (internal state structure), and the third image (international anarchy).

Classical Realism

An international relations theory asserting that interstate politics is an unceasing struggle for power driven fundamentally by human nature rather than systemic structure.

Utopianism (Carr)

E. H. Carr's critique of interwar liberal internationalism, denoting political thought centered on moral aspirations without rigorous analysis of power and material feasibility.

Animus Dominandi

Hans Morgenthau's Latin concept denoting the innate human desire to dominate, which serves as the foundational first-image driver of political competition in classical realism.

Interest Defined in Terms of Power

Hans Morgenthau's foundational analytical signpost providing foreign policy legibility by assuming statesmen evaluate actions based on the accumulation and preservation of power.

Melian Dialogue

Thucydides' historical debate in the Peloponnesian War arguing that justice is only a live question between equals in power, while the strong do what they can and the weak suffer what they must.

Prudence (Political Realism)

The supreme political virtue in classical realism, defined as the careful calculation of the concrete political consequences of actions rather than adherence to abstract moral maxims.

Morgenthau's Two-Part Test

The realist standard for state intervention requiring that a vital national interest be at stake and that available national power provides a realistic prospect of success.

Nationalistic Universalism

Hans Morgenthau's term for the dangerous foreign policy error where a state equates its own national moral aspirations with the universal laws governing the world.

Mandala System (Kautilya)

An ancient Indian theory of interstate diplomacy set out in the Arthashastra, modeling states as concentric circles where immediate neighbors are assumed adversaries and their adjacent neighbors are natural allies.

Feminist Reformulation of Realism (Tickner)

J. Ann Tickner's critique of Morgenthau, arguing that classical realism models human nature as a partial masculine abstraction and proposing power as the mutual capacity to act in concert.

Structural Realism (Neorealism)

Kenneth Waltz's systemic theory positing that international conflict, competition, and balancing are generated by the anarchic structure of the system rather than human nature.

Three Elements of Structure (Waltz)

The defining components of an international political structure: ordering principle (anarchic), character of units (functionally undifferentiated), and the distribution of capabilities across units.

Self-Help

The structural condition under anarchy requiring each state to generate and maintain its own security capabilities without relying on external enforcement.

Internal Balancing vs External Balancing

The two primary methods of security enhancement: building domestic military and economic capabilities (internal balancing) versus forming alliance coalitions with external states (external balancing).

Security Dilemma

A condition introduced by John Herz where the measures an actor takes to enhance its own safety unintentionally reduce the security of other states, sparking reciprocal counter-measures.

Stag Hunt

A game-theoretic model of international cooperation illustrating how fear and mistrust alone can lead actors to settle on defecting sub-optimal outcomes despite a shared preference for mutual cooperation.

Offense-Defense Balance

Robert Jervis's concept determining whether prevailing technology and geography make it cheaper and easier to conquer territory or to defend against attack.

Distinguishability of Postures (Jervis)

The operational variable measuring whether military forces and doctrines can be clearly differentiated as offensive or defensive by outside observers.

Polarity

The distribution of capabilities across the international system, defined by whether the system contains one (unipolar), two (bipolar), or three or more (multipolar) great powers.

Chain-Ganging

The strategic pathology in multipolar alliance networks where equal great powers are unconditionally bound to defend reckless or vulnerable junior allies, dragging all members into war.

Defensive Realism

A branch of neorealism arguing that anarchy creates structural incentives for prudence and moderation, because the balance of power routinely punishes expansionism through balancing.

Offensive Realism (Mearsheimer)

A structural realist theory asserting that states face structural incentives to maximize their relative share of world power, seeking regional hegemony as the only secure state under anarchy.

Balance of Threat Theory

Stephen Walt's revision of balance-of-power theory positing that states align against the greatest perceived foreign threat, determined by aggregate power, geographic proximity, offensive capabilities, and aggressive intentions.

Bandwagoning

The strategic alignment of a state with the primary source of danger, pursued either to appease an aggressor or to share in the spoils of victory.

Rationalism (IR Methodology)

A methodological approach explaining social and international outcomes as the product of individual goal-seeking actors choosing strategies under specific structural constraints.

Expected Utility Theory

A normative decision model where an actor identifies preferences transitively and selects the strategic alternative yielding the highest probability-weighted sum of utility payoffs.

Ex Post Inefficiency of War

James Fearon's foundational premise that because warfare destroys life and material resources, fighting is always inefficient after the fact compared to any negotiated peace settlement avoiding those costs.

Bargaining Range

The continuous spectrum of negotiated settlements that disputing states both strictly prefer over paying the costs of armed conflict, with a total width equal to the combined costs of war.

Private Information and Incentives to Misrepresent

A rationalist cause of war where states hold private knowledge regarding capabilities or resolve, combined with strategic incentives to bluff, preventing the discovery of a mutually acceptable deal.

Costly Signal

A tangible international action that involves significant material, political, or military expenditure, ensuring that an actor cannot easily bluff and credibly communicating genuine resolve.

Commitment Problem

A rationalist cause of war arising when shifting power or first-strike advantages make it impossible for a state to credibly guarantee that it will not exploit a future advantage to renege on an agreement.

Issue Indivisibility

The theoretical scenario where a contested good cannot be partitioned or settled through side payments, largely attributed in practice to domestic political mechanisms rather than physical properties.

Liberalism (Moravcsik)

An IR paradigm positing that fundamental state preferences are determined by the societal groups represented in domestic institutions rather than being structurally fixed by international anarchy.

Policy Interdependence

Andrew Moravcsik's term for the external cross-border costs and benefits imposed on other societies when dominant domestic groups in one state successfully realize their policy preferences.

Ideational Liberalism

A variant of liberalism asserting that state preferences are determined by domestic social identities and shared collective values regarding borders, political authority, and socioeconomic regulation.

Commercial Liberalism

A variant of liberalism holding that state preferences reflect the changing patterns of domestic and transnational market incentives, as economic winners and losers lobby governments regarding openness.

Republican Liberalism

A variant of liberalism positing that state preferences are determined by modes of domestic political representation, wherein broad and fair representation tends to inhibit aggressive foreign policy.

Democratic Peace Theory

The empirical regularity asserting that constitutional democracies almost never engage in interstate war against one another, representing a dyadic rather than monadic peace.

Audience Costs

James Fearon's concept that domestic political accountability imposes escalating political penalties on democratic leaders who publicly escalate crises and then back down, rendering their threats credible.

Model I: Rational Actor (Allison)

Graham Allison's conceptual framework that treats a government as a unified, purposive actor making calculated choices to maximize strategic goals.

Model II: Organizational Process (Allison)

Graham Allison's conceptual framework analyzing foreign policy actions as the constrained output of bureaucratic entities acting according to established standard operating procedures.

Model III: Bureaucratic Politics (Allison)

Graham Allison's conceptual framework viewing governmental decisions not as rational choices, but as the emergent resultant of political bargaining and pulling-and-hauling among individual departmental leaders.

Two-Level Games (Putnam)

Robert Putnam's framework modeling international negotiations as simultaneous bargaining on an international stage (Level I) and a domestic ratification stage (Level II).

Neoliberal Institutionalism

A theory accepting realism's core premises of anarchy, unitary actors, and rational egoism while arguing that international institutions facilitate durable cooperation by mitigating market failures.

Harmony (Keohane)

A strategic situation in which actors pursuing their own uncoordinated self-interest automatically facilitate the goal attainment of other actors without needing agreements or institutions.

Cooperation (Keohane)

A process of policy coordination wherein actors consciously adjust their behavior to the actual or anticipated preferences of others to overcome realized or potential conflict.

Discord (Keohane)

A condition where governments regard each other's policies as impediments to their own goals and fail to undertake mutual policy adjustments.

Deadlock (Oye)

A strategic game-theoretic situation in which mutual defection is the dominant preference for all parties, precluding the possibility of mutual cooperation.

Dilemma of Common Interests (Stein)

Arthur Stein's term for situations (such as the Prisoner's Dilemma) where independent decision-making yields Pareto-deficient outcomes, necessitating collaborative regimes with monitoring and sanctioning mechanisms.

Dilemma of Common Aversions (Stein)

Arthur Stein's term for coordination situations (such as the Battle of the Sexes) where actors disagree on the ideal outcome but agree on an outcome to avoid, requiring regimes merely to supply focal points.

International Regime

Stephen Krasner's definition of implicit or explicit principles, norms, rules, and decision-making procedures around which actor expectations converge within a given issue-area.

Shadow of the Future (Oye)

The expectation of repeated future interactions over an extended horizon, which enhances the prospect of international cooperation by penalizing short-term defection.

State Positionality (Grieco)

Joseph Grieco's realist critique positing that states are defensive positionalists driven by relative-gains concerns rather than atomistic egoists focused solely on absolute gains.

Relative Gains vs Absolute Gains

The analytical divide between assessing strategic outcomes based on one's comparative standing relative to partners versus evaluating outcomes based solely on one's own net benefit.

Constructed Focal Points (Keohane and Martin)

Institutional mechanisms that alleviate distributional conflict in coordination problems by making a specific equilibrium prominent among multiple possible cooperative outcomes.

Constructivism (IR Theory)

An approach positing that the fundamental structures of international politics are social rather than purely material, with state identities and interests endogenously formed through ongoing interaction and shared knowledge.

Mutual Constitution

The ontological premise that social structures define the identities and interests of agents, while the ongoing practices of agents simultaneously recreate and sustain those structures.

Social Structure (Constructivism)

An analytical construct composed of shared knowledge, material resources, and recurrent practices that exists only in process through continuous social enactment.

'Anarchy Is What States Make of It'

Alexander Wendt's thesis that anarchy possesses no single inherent logic, meaning self-help and power politics are socially constructed institutions rather than unavoidable structural imperatives.

Identities (Constructivism)

Relatively stable, role-specific understandings and expectations about self that international actors acquire by participating in collective meanings, serving as the necessary foundation of state interests.

Three Security Systems (Wendt)

The distinct structural cultures of anarchy: competitive (actors identify negatively in zero-sum rivalry), individualistic (actors pursue absolute gains indifferently), and cooperative (actors perceive the security of each as the responsibility of all).

First Encounter (Wendt)

A model of interaction where ego initiates a gesture and alter interprets and responds, creating reciprocal expectations that gradually institutionalize a relationship as either amicable or threatening.

Norm (Finnemore and Sikkink)

A standard of appropriate behavior for actors with a particular identity, defined fundamentally by an evaluative and prescriptive quality of 'oughtness'.

Logic of Appropriateness

A decision-making framework where actors determine action by asking what behavior is legitimate and fitting for their role in a given context, contrasted with utility maximization.

Logic of Consequences

A decision-making framework where goal-seeking actors calculate the expected utility, costs, and strategic outcomes of alternative choices to advance their preexisting interests.

Norm Life Cycle

Martha Finnemore and Kathryn Sikkink's three-stage evolutionary model explaining how international standards develop and spread through emergence, cascade, and internalization.

Norm Entrepreneur

An individual or non-governmental advocate who utilizes organizational platforms and persuasion to promote a novel standard of appropriateness against existing social expectations.

Norm Tipping Point

The critical threshold, typically reached when roughly one-third of states in the system adopt an emerging standard, that triggers a sudden and rapid cascade of international adherence.

Norm Cascade

The intermediate dynamic of norm diffusion driven by active peer socialization, conformity, legitimation, and esteem, leading states to adopt standards without domestic grassroots agitation.

Norm Internalization

The terminal stage of norm institutionalization where a standard acquires an unquestioned, taken-for-granted character and is adhered to habitually without public controversy.

Nuclear Taboo (Tannenwald)

A normative and moral prohibition that stigmatized atomic armaments as unacceptable weapons of mass destruction, constraining their employment irrespective of material deterrence calculations.

Security Community

A transnational social structure characterized by dependable expectations of peaceful change, shared identity, and mutual trust that rule out armed conflict among its constituent members.