Cold War Policy refers to the strategies and actions taken by the United States and its allies to contain the spread of communism, primarily led by the Soviet Union. This period, lasting from the late 1940s to the early 1990s, involved various political, military, and economic measures aimed at preventing the influence of communist ideologies around the world. Key elements of Cold War Policy included the Truman Doctrine, which promised support to countries resisting communism, and the Marshall Plan, which provided economic aid to rebuild European nations. Additionally, military alliances like NATO were formed to strengthen collective security against potential Soviet aggression.