Treaty on the Creation of the USSR on 30 December 1922 by a conference of delegations from the Russian SFSR, the Transcaucasian SFSR, the Ukrainian SSR and the Byelorussian SSR. The Treaty and the Declaration were confirmed by the 1st Congress of Soviets of the USSR and signed by heads of delegations Mikhail Kalinin, Mikhail Tskhakaya, Mikhail Frunze and Grigory Petrovsky, Aleksandr Chervyakov respectively on December 30, 1922. The treaty provided flexibility to admit new members. Therefore, by 1940 the Soviet Union grew from the founding four republics to 15 republics. On 8 December 1991, Russian, Ukrainian and Belarusian Presidents signed the Belavezha Accords. The agreement declared
Treaty on the Creation of the USSR dissolution of the USSR by its founder states (denunciation of the Treaty on the Creation of the USSR) and established the CIS. On 10 December, the accord was ratified by the Ukrainian and Belarusian parliaments. On 12 December, the agreement was ratified by the Russian Parliament, therefore the Russian SFSR renounced the Treaty on the Creation of the USSR and de facto declared Russia's independence from the USSR. On 26 December 1991, the USSR was self-dissolved by the "Council of the Republics" of the Supreme Soviet of the Soviet Union, the first house of Soviet legislature (the second house, the