(1904–2005) US writer and diplomat; full name George Frost Kennan. Considered the chief architect of the US containment policy against the Soviet Union, he held ambassadorships to the Soviet Union 1952 and to Yugoslavia 1961–63. He wrote Russia Leaves the War (1956), The Decision to Intervene (1958), Memoirs: 1925–1950 (1967), Memoirs: 1950–1963 (1972), and The Cloud of Danger (1977).