During the Cold War, the Monroe Doctrine was applied to Latin America by the framers of U.S. foreign policy. When the Cuban Revolution (1953–1959) established a Communist government with ties to the Soviet Union, it was argued that the Monroe Doctrine should be invoked to prevent the spread of Soviet-backed Communism in Latin America. Under this rationale, the U.S. provided intelligence and military aid to Latin and South American governments that claimed or appeared to be threatened by Communist subversion (as in the case of Operation Condor).