At the Potsdam Conference ( July 1945 ) , Stalin demanded a revision of the Montreux Convention ; Britain and the U.S. agreed with the Soviet demand that the Straits should always be open to the warships of the Black Sea powers and , in principle , remain closed to those of outside powers , but further Soviet demand that the Soviet Union should be allowed to join in the defence of the Straits was rejected by Turkey , with the backing of the West
Potsdam Conference
Potsdam Conference
Soviet Union–Turkey relations