George F. Kennan

George F. Kennan
United States United States 1904–2005 ○ Died of natural causes

The American diplomat and historian whose 1946 Long Telegram and X article laid the intellectual foundations of containment

'The main element of any United States policy toward the Soviet Union must be a long-term, patient but firm and vigilant containment of Russian expansive tendencies,' from the 1947 X article.

An American diplomat and historian who, in his 1946 'Long Telegram' from Moscow and his 1947 X article in Foreign Affairs, articulated the strategy of long-term, patient, and vigilant containment of Soviet expansion. As the first Director of the State Department's Policy Planning Staff, he played a central role in designing the Marshall Plan and laid the intellectual groundwork for the Truman Doctrine, NATO, and the architecture of the early Cold War. Yet he spent the rest of his long life as a critic of what containment became: opposing the militarization of his ideas, the Vietnam War, and NATO enlargement, and insisting that the Soviet threat had always been political, not military.

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