William Dalrymple (historian) International relations Glossary OrganizationsPresent BRICS Collective Security Treaty Organization (CSTO) International Criminal Court (ICC) Non-Aligned Movement (NAM) North Atlantic Treaty Organization (NATO) Shanghai Cooperation Organisation (SCO) United Nations (UN) Past League of Nations Warsaw Pact History 1648–1814 1814–1919 1919–1939 Diplomatic history of World War II Cold War International relations since 1989 Concepts Alliance Entente Coalition Military Appeasement Co-belligerence Collective security Colonialism / Colonization Crisis Deterrence theory Expansionism Grey-zone Hegemony Idealism Imperialism International community Internationalism Internationality Liberal Interventionism Isolationism National interest Neutral country Non-belligerent Non-state actor Peace Power Regionalism Right of conquest Sovereignty Suzerainty Treaty Bilateral Friendship Multilateral Non-aggression Peace War Whole-of-society Theory Constructivism English school Feminism Liberalism Marxism Postcolonialism Realism Related fields and subfields Comparative politics Counterproliferation Diplomacy Foreign policy analysis Geopolitics International law International political economy International political sociology Peace and conflict studies Security studies