Strategic U.S. foreign policy of the late 1940s and early 1950s intended to check the expansionist designs of the Soviet Union through economic, military, diplomatic, and political means. It was conceived by George Kennan soon after World War II. An early application of containment was the Truman Doctrine (1947), which provided U.S. aid to Greece and Turkey. See also Marshall Plan.

This entry comes from Encyclopædia Britannica Concise.
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