Western Bloc


The Western Bloc, also known as the Free Bloc, the Capitalist Bloc, the American Bloc, and the NATO Bloc, was a coalition of countries that were officially allied with the United States during the Cold War of 1947–1991. It was spearheaded by the member states of NATO, but also included countries that advocated democracy, anti-communism and anti-socialism, and likewise were opposed to the Soviet Union and the Warsaw Pact. The term was used to distinguish this anti-Soviet grouping from its pro-Soviet counterpart: the Eastern Bloc. Throughout the protracted period marked by Soviet–American tensions, the governments and the press of the Western Bloc were more inclined to refer to themselves as the Free World or the First World, whereas the Eastern Bloc was often referred to as the "Communist World" or more formally as the "Second World".

The "Three Worlds" of the Cold War era, AprilAugust 1975
  First World: Western Bloc led by the USA, the UK, NATO, Japan and their allies
  Second World: Eastern Bloc led by the USSR, the Warsaw Pact, China and their allies
  Third World: Non-Aligned Movement (led by India and Yugoslavia) and other neutral countries
Political situation in Europe during the Cold War

1947–1991 Western Bloc associationsEdit


* Indicates founding member state

Five EyesEdit


Anti-Soviet communist or socialist states (until 1989)Edit

Compact of Free AssociationEdit

METO, Baghdad Pact, CENTO (until 1979)Edit

Rio TreatyEdit

SEATO (until 1977)Edit

Map of SEATO members in 1959, shown in blue

Middle East/North Africa RegionEdit

Asia, Southeast Asian and Oceania PartnersEdit



Post-1991 Western-aligned associationsEdit


* Indicates pre-1991 member state

Major non-NATO ally (MNNA)Edit

Middle Eastern PartnersEdit

Asia, South East Asian and Oceania PartnersEdit

Inter-American PartnersEdit

Quadrilateral Security DialogueEdit




See alsoEdit



  • Matloff, Maurice. Makers of Modern Strategy. Ed. Peter Paret. Princeton: Princeton UP, 1971. 702.
  • Kissinger, Henry. Diplomacy. New York: Simon & Schuster, 1994. 447,454.
  • Lewkowicz, Nicolas. The United States, the Soviet Union and the Geopolitical Implications of the Origins of the Cold War New York and London: Anthem Press, 2018.