The Cold War State of tension and hostility between the United States and the Soviet Union because of differences in political and economic philosophies
Iron Curtain Imaginary line drawn through Europe that divided Western democracies from Communist countries in the East
Truman Doctrine Economic and military program of U.S. created in 1947 to help countries resist communist aggression Successful in Greece and Turkey
Containment Policy that involved limiting communism to areas where it already existed
Marshall Plan 1947 American aid plan for Europe to rebuild Goal to strengthen democratic governments to lessen appeal of communism
NATO North Atlantic Treaty Organization An alliance between western nations to support each other in case of attack Collective security agreement
Warsaw Pact Alliance between the Soviet Union and its satellite nations promising military cooperation Created in response to NATO