But he also asked Guterres to distribute to the security council the legal memos written by UN legal counsel dated 19 December 1991 that the Russian Federation be permitted to join the security council as the successor to the Soviet Union.
Ukraine claims the constituent republics of the USSR declared in 1991 that the Soviet Union ceased to exist, and with it should have gone the legal right of any of those entities, including Russia, to sit on the council.
No decision to permit Russia to the security council was ever put to the General Assembly. The UN charter was never amended after the USSR broke up. It still references the Soviet Union, and not Russia, as one of the permanent members of the UN security council.
By contrast in 1991 China’s entry into the UN was subject to a resolution. A member of the
United Nations which has persistently violated the principles contained in the present charter may be expelled from the Organization by the General Assembly upon the recommendation of the security council.