Kennan, George Frost, 1904–2005, U.S. diplomat and historian, b. Milwaukee, Wis., grad. Princeton, 1925. Among the most influential Americans in the Foreign Service in the 20th cent., he served from 1927 in various diplomatic posts in Europe, including Geneva, Hamburg, Riga, Berlin, Prague, Lisbon, and Moscow. From the last he sent his "Long Telegram" (1946), which with his 1947 Foreign Policy article (published under the pseudonym X) was pivotal in the establishment of the cold war U.S. policy of Soviet "containment."
In 1947 he became chairman of the policy-planning staff of the State Dept., and contributed to the development of the Marshall Plan. He also was influential in the development of what became the Central Intelligence Agency's clandestine service. Later (1949–50) he was one of the chief advisers to Secretary of State Dean Acheson, but increasingly he disagreed with those in the government who emphasized the military aspects of containment, believing that Soviet expansion should be contained more through political and economic means. Kennan was appointed ambassador to the USSR in 1952, but was recalled at the demand of the Soviet government because of comments he made on the isolation of diplomats in Moscow and on the campaign that Soviet propagandists were conducting against the United States.
Retiring from the diplomatic service in 1953, he joined the Institute for Advanced Study at Princeton, N.J., and from 1956 until 1974 was professor at its school of historical studies. In the late 1950s he became an advocate of withdrawal of U.S. forces from Western Europe and of Soviet forces from the satellite countries. From 1961 to 1963 he served as U.S. ambassador to Yugoslavia, and in the mid-1960s he opposed U.S. involvement in Vietnam, regarding the conflict there as peripheral to U.S. interests. His more than 20 noteworthy books include American Diplomacy, 1900–1950 (1951), Soviet-American Relations, 1917–1920 (2 vol., 1956–58; Vol. I, Pulitzer Prize), Russia and the West under Lenin and Stalin (1961), Nuclear Delusion (1982), and At a Century's Ending (1996).
See his memoirs (2 vol., 1967–72; Vol. I, Pulitzer Prize) and the autobiographical Sketches from a Life (1989); George F. Kennan and the Origins of Containment, 1944–1946: The Kennan-Lukacs Correspondence (1997) and J. Lukacs, ed., Through the History of the Cold War: The Correspondence of George F. Kennan and John Lukacs (2010); biographies by J. Lukacs (2007) and J. L. Gaddis (2011); N. Thompson, The Hawk and the Dove: Paul Nitze, George Kennan, and the History of the Cold War (2009).
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