 Acheson devised the policy and wrote Truman's 1947 request to Congress for aid to Greece and Turkey, a speech which stressed the dangers of totalitarianism rather than Soviet aggression and marked the fundamental change in American foreign policy that became known as the Truman Doctrine.Acheson designed the economic aid program to Europe that became known as the Marshall Plan.Acheson believed the best way to contain Stalin's Communism and prevent future European conflict was to restore economic prosperity to Western Europe, to encourage interstate cooperation there, and to help the U.S. economy by making its trading partners richer.