1945-1961: The Yalta System Breaks Down
- 1947: The Truman Doctrine.
- 1949: NATO Treaty signed.
- 1949: Communists take power in China; Nationalists retreat to Taiwan
- 1950: Korean War begins.
- 1953: Armistice ends fighting in the Korean War.
- 1955: Warsaw Pact is formed
- 1961: Bay of Pigs invasion.
1956-1975: Toward Peaceful Coexistence
1975-1989: The End of the Soviet System
Churchill: Iron Curtain Speech