蘇聯自 1922 年建立後，在主權的實踐上有兩重要的轉折點，一是 1922 年的建立，是透過條約的簽訂而組成。也就是 1922 年的蘇聯在本質上具有「邦聯」的性質。但是，隨著 1924 年蘇聯憲法的通過，「邦聯」的蘇聯轉換 成「聯邦」的蘇聯，原來俄羅斯聯邦、烏克蘭、白俄羅斯及外高加索聯邦四個共和國主權的安排，透過憲法架構下「自由退出權」的設計得到妥協。在這樣的架構下，蘇聯體制的變異性成為一個特殊的現象。這種變異性使蘇聯在聯合國創立之初，就出現「一國三席」的特..

During its establishment in 1922 and political transformation in 1924, the USSR transformed from a confederation to a federation through the Soviet Constitution in 1924. As a result, four sovereignties, including the original Russian SFSR, the Ukrainian SSR, the Byelorussian SSR, and the Transcaucasian SFSR, were entitled free exit rights as a compromise under the constitutional framework. This structure led to a unique phenomenon where one nation had three seats at the UN. While the USSR served as a permanent member in the U..