realism (international relations)

realism (international relations)
Name	Realism (international relations)
Caption	19th-century diplomacy and power politics
Era	Classical to contemporary
Main thinkers	Thucydides, Niccolò Machiavelli, Thomas Hobbes, Hans Morgenthau, Kenneth Waltz, John Mearsheimer, E. H. Carr
Notable works	History of the Peloponnesian War, The Prince (Machiavelli), Leviathan (Hobbes), Politics Among Nations, Theory of International Politics

realism (international relations) is a dominant theoretical tradition in international relations that emphasizes the role of state conflict, power competition, and survival in an anarchic international system. Realist analysis foregrounds actors such as Great power, nation-state, and alliances and interprets events like the Peloponnesian War, Congress of Vienna, World War I, and Cold War through power dynamics. Major proponents include Thucydides, Niccolò Machiavelli, Thomas Hobbes, Hans Morgenthau, Kenneth Waltz, and John Mearsheimer.

Overview and Core Tenets

Realists argue that in an anarchic international system without a central authority such as the United Nations endowed with coercive primacy, states prioritize survival, leading to self-help, power balancing, and security dilemmas exemplified by events like the Treaty of Versailles and crises such as the Cuban Missile Crisis. Core tenets derive from classical works such as History of the Peloponnesian War, The Prince (Machiavelli), and Politics Among Nations, and modern formulations in Theory of International Politics and The Tragedy of Great Power Politics. Realist reasoning often analyzes interactions among actors like Great Britain, Ottoman Empire, Soviet Union, United States, China, and Germany, and institutions such as the North Atlantic Treaty Organization and Warsaw Pact as instruments of power management.

Historical Development

Classical roots trace to Thucydides’ account of the Peloponnesian War and Renaissance texts like The Prince (Machiavelli), continuing through early modern contributions by Thomas Hobbes in Leviathan (Hobbes). Twentieth-century revival occurred with E. H. Carr's The Twenty Years' Crisis reacting to the League of Nations aftermath and World War II settlement debates at Yalta Conference and Potsdam Conference. Postwar institutionalization emerged around scholars at institutions such as University of Chicago, Columbia University, and Princeton University with Hans Morgenthau and later structural realists like Kenneth Waltz and offensive realists like John Mearsheimer. Cold War events involving the Truman Doctrine, Korean War, Vietnam War, and Cuban Missile Crisis shaped realist scholarship and policy influence.

Variants and Theoretical Debates

Variants include classical realism (e.g., Hans Morgenthau), structural or neorealism (e.g., Kenneth Waltz), offensive realism (e.g., John Mearsheimer), defensive realism (e.g., Robert Jervis), neoclassical realism (e.g., Gideon Rose), and realist institutionalism (e.g., Stephen Krasner). Debates concern the explanatory power of system-level structures found in Theory of International Politics versus unit-level factors discussed by E. H. Carr and Hans Morgenthau, and disputes over hegemonic stability as framed by Charles Kindleberger and challenged in analyses of the British Empire and United States postwar order. Scholarly disagreements engage figures such as Alexander Wendt and Robert Putnam from rival theoretical traditions.

Key Concepts and Assumptions

Realist frameworks employ concepts including balance of power (seen in the Concert of Europe), security dilemma (illustrated by the Arms Race between United States and Soviet Union), polarity (unipolarity after the Cold War, bipolarity during the Cold War, multipolarity in the Interwar period), hegemony (as with British Empire and United States), deterrence (central to Nuclear strategy and policies during the Cuban Missile Crisis), and alliance politics exemplified by NATO and Warsaw Pact. Assumptions posit rational actors pursuing national interest, material capabilities such as gross domestic product and military strength, and constraining structural incentives that shape behavior in crises like Suez Crisis and Falklands War.

Critics and Alternative Theories

Critics include proponents of liberal internationalism (e.g., Robert Keohane, Joseph Nye), constructivism (e.g., Alexander Wendt, Martha Finnemore), Marxism and critical theory scholars (e.g., Immanuel Wallerstein, Robert Cox), and scholars of feminist international relations (e.g., Cynthia Enloe). Alternative explanations highlight the role of institutions such as the European Union, norms like human rights codified in instruments such as the Universal Declaration of Human Rights, transnational networks including Greenpeace and International Committee of the Red Cross, and domestic politics exemplified by cases in China and India, challenging realist assumptions about unitary state actors and material determinism.

Influence on Foreign Policy and Practice

Realist ideas have influenced policy actors and events including the strategies of Otto von Bismarck in the German unification era, George F. Kennan's containment policy toward the Soviet Union, Richard Nixon and Henry Kissinger's détente, and debates over Iraq War and pivot to Asia involving United States strategy toward China. Institutions such as NATO and doctrines like mutually assured destruction reflect realist precepts, and contemporary strategic planning in capitals such as Washington, D.C., Beijing, Moscow, London, and New Delhi often incorporates realist analyses regarding power transitions, balance considerations, and alliance management.

Category:International relations theory