Harry S. Truman: Truman Doctrine

(1947)

Impact

The Truman Doctrine crystallized the emerging cold war between the United States and Soviet Union, proclaiming that the United States must play a leading role in shaping international politics. In response to British abandonment of its historical imperial role in the Balkans and Middle East, President Truman outlined an aggressive policy in which the United Sates would fulfill the British power vacuum. The Soviet Union, with its expansion into Eastern Europe, however, posed a challenge to American hegemony. To justify America's expanding world role, President Truman employed...

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Harry Truman (Library of Congress)

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