sentences:  Eisenhower singled out the Soviet threat in his doctrine by authorizing the commitment of U.S. forces "to secure and protect the territorial integrity and political independence of such nations, requesting such aid against overt armed aggression from any nation controlled by international communism".The phrase "international communism" made the doctrine much broader than simply responding to Soviet military action.A danger that could be linked to communists of any nation could conceivably invoke the doctrine.