Word Origin & History
Iron Curtain
in ref. to the Soviet occupation of Eastern Europe, famously coined by Churchill March 5, 1946, in speech at Westminster College, Fulton, Missouri, but it had been used earlier in this context (e.g. by U.S. bureaucrat Allen W. Dulles at a meeting of the Council on Foreign Relations, Dec. 3, 1945). The fig. sense of "impenetrable barrier" is attested from 1819, and the specific sense of "barrier at the edge of the sphere of influence of the Soviet Union" is recorded from 1920. During World War II, Goebbels used in in Ger. (ein eiserner Vorhang) in the same sense.
) a barrier to understanding and the exchange of information and ideas created by ideological, political, and military hostility of one country toward another, esp. such a barrier between the Soviet Union and its allies and other countries.