Cold War strategy assumed a more assertive and militaristic quality, causing Kennan to lament what he believed was an abrogation of his previous assessments. His proposals were dismissed by the Truman administration and Kennan's influence waned, particularly after Dean Acheson was appointed Secretary of State in 1949.

By late 1948, Kennan became confident that positive dialogue could commence with the Soviet government. policy, Kennan began to criticize the foreign policies that he had helped articulate. Kennan played a major role in the development of definitive Cold War programs and institutions, notably the Marshall Plan. These texts provided justification for the Truman administration's new anti-Soviet policy. His ' Long Telegram' from Moscow in 1946 and the subsequent 1947 article ' The Sources of Soviet Conduct' argued that the Soviet regime was inherently expansionist and that its influence had to be 'contained' in areas of vital strategic importance to the United States. He was also one of the group of foreign policy elders known as ' The Wise Men.'ĭuring the late 1940s, his writings inspired the Truman Doctrine and the U.S. He lectured widely and wrote scholarly histories of the relations between the Soviet Union (USSR) and the United States.

He was best known as an advocate of a policy of containment of Soviet expansion during the Cold War. George Frost Kennan (Febru– March 17, 2005) was an American diplomat and historian.

Gay spy telegram