Short answers, pulled from the story.
The Belovezha Accords were signed on the 8th of December 1991 in the snow of Belovezhskaya Pushcha near Viskuli. Three leaders met inside a wooden state dacha to sign an agreement that established the Commonwealth of Independent States.
Boris Yeltsin represented Russia alongside First Deputy Prime Minister Gennady Burbulis. Leonid Kravchuk came from Ukraine with Vitold Fokin while Vyacheslav Kebich represented Belarus as its prime minister. These six men signed the document declaring the USSR effectively ceased to exist.
Critics argued the Belovezha Accords bypassed Article 72 of the 1977 Soviet Constitution which granted republics the right to secede freely. The document combined the 1922 Treaty with the 1969 Vienna Convention on Law of Treaties without parliamentary approval or public discussion.
Yeltsin informed UN Secretary-General Javier Pérez de Cuéllar that Russia would continue Soviet membership in the United Nations. On the 31st of January 1992, Yeltsin personally attended a Security Council meeting as representative of Russia occupying the permanent seat originally granted to the USSR.
The Alma-Ata Protocol dated the 21st of December 1991 expanded the agreement through eleven republics except Georgia which remained absent. Eleven of twelve remaining Soviet republics agreed the Soviet Union no longer existed and ratified documents entirely without reservations as of 2025 according to official depository records.