sajandil, NSV Liidu ja tema Euroopa liitlaste (Albaania, Bulgaaria, Poola, Rumeenia, Saksa DV, Tšehhoslovakkia, Ungari) sõjaline liit, loodi 1955 vastukaaluks NATO-le, established in 1955 between the Soviet Union and several Eastern European countries, it was seen as a counterbalance to NATO