Warsaw Pact

A military pact between the countries of the former Soviet Bloc (USSR, Albania, Bulgaria, Hungary, Poland, the German Democratic Republic, Rumania, Czechoslovakia). It was signed in Warsaw in May 1955, as a reaction to the Federal German Republic joining NATO. Albania withdrew in 1968 after Soviet intervention in Czechoslovakia. After the dislocation of the USSR, the Pact’s military organization was dissolved in April 1991.