 Others consider Yugoslavia not to be a member after it broke with Soviet policy in the 1948 Tito–Stalin split.In 1922, the RSFSR, the Ukrainian SSR, the Byelorussian SSR and the Transcaucasian SFSR approved the Treaty of Creation of the USSR and the Declaration of the Creation of the USSR, forming the Soviet Union.Soviet leader Joseph Stalin, who viewed the Soviet Union as a "socialist island", stated that the Soviet Union must see that "the present capitalist encirclement is replaced by a socialist encirclement".