Warsaw Treaty Organization

Warsaw Treaty Organization or Warsaw Pact, alliance set up under a mutual defense treaty signed in Warsaw, Poland, in 1955 by Albania, Bulgaria, Czechoslovakia, East Germany, Hungary, Poland, Romania, and the Soviet Union. The organization was the Soviet bloc's equivalent of the North Atlantic Treaty Organization. Initiated as an alliance made necessary by the remilitarization of West Germany under the Paris Pacts of 1954, the treaty was binding for 20 years but would lapse in the event of a general European collective security treaty. A unified military command, with headquarters in Moscow, directed the united forces, which included Soviet divisions stationed in some of the member nations prior to the signing of the treaty. In 1962, Albania was no longer invited to Warsaw Treaty meetings and formally withdrew in 1968. In the same year, the organization sent forces to occupy Czechoslovakia after that country began to take steps toward democratization. The 1989 collapse of the Communist governments in Eastern Europe made the treaty superfluous, as the new governments repudiated their former ally, the Soviet Union. The Warsaw Treaty Organization dissolved in June, 1991.

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Warsaw Pact

 or Warsaw Treaty Organization

Military alliance of the Soviet Union, Albania (until 1968), Bulgaria, Czechoslovakia, East Germany, Hungary, Poland, and Romania, formed in 1955 in response to West Germany's entry into NATO. Its terms included a unified military command and the stationing of Soviet troops in the other member states. Warsaw Pact troops were called into action to suppress uprisings in Poland (1956), Hungary (1956), and Czechoslovakia (1968). The alliance was dissolved in 1991 after the collapse of the Soviet bloc, and Soviet troops departed. Several Warsaw Pact members later joined NATO.