Which President is associated with the policy of containment during the Cold War?

Harry S. Truman is closely associated with the policy of containment during the Cold War. This policy was adopted in response to the threat posed by the Soviet Union and aimed to prevent the spread of communism beyond where it already existed. Truman articulated this approach in his 1947 Truman Doctrine, which committed the United States to support countries resisting communist influence or aggression, beginning with aid to Greece and Turkey.

Containment became a central tenet of U.S. foreign policy throughout the Cold War, influencing several subsequent administrations and shaping U.S. interactions with other nations. Truman's emphasis on containment reflected a strategic pivot in American foreign policy from isolationism to a more interventionist stance, marking a significant shift in the country's approach to international affairs during a period of geopolitical tension.