that it had changed its name to Belarus. Estonia, Latvia, and Lithuania were admitted to the UN on 17 September 1991, after regaining independence before the dissolution of the USSR. They do not consider themselves to have been legally represented by the Soviet Union during its occupation. Russia took over the Soviet Union's seat on 24 December 1991, after a letter by president Boris Yeltsin was received by the secretary-general Javier Pérez de Cuéllar. Armenia, Azerbaijan, Kazakhstan, Kyrgyzstan, the Republic of Moldova, Tajikistan, Turkmenistan, and Uzbekistan were admitted to the UN on 2 March 1992. Georgia was admitted to the UN on 31 July 1992. United Arab Republic (1958–1971) Both Egypt and Syria joined the UN as original members on 24 October 1945. Following a plebiscite on 21 February 1958, the United Arab Republic was established by a union of Egypt and Syria and continued as a single member. On 13 October 1961, Syria, having resumed its status as an independent state, resumed its separate membership in the UN. Egypt continued as a UN member under the name of the United Arab Republic, until it reverted to its original name on 2 September 1971. Syria changed its name to the Syrian Arab Republic on 14 September 1971. Yemen (1947–1990) and Democratic Yemen (1967–1990) Yemen (i.e., North Yemen) was admitted to the UN on 30 September 1947; Southern Yemen (i.e., South Yemen) was admitted to the UN on 14 December 1967, with its name changed to the People's Democratic Republic of Yemen on 30 November 1970, and was later referred to as Democratic Yemen. On 22 May 1990, the two states merged to form the Republic of Yemen, which continued as a single member under the name Yemen. Yugoslavia / Serbia and Montenegro (1945–2006) The Socialist Federal Republic of Yugoslavia, referred to as Yugoslavia, joined the UN as an original member on 24 October 1945. By 1992, it had been effectively dissolved into five independent states, which were all subsequently admitted to the UN: Bosnia and Herzegovina, Croatia, and Slovenia were admitted to the UN on 22 May 1992. North Macedonia was admitted to the UN on 8 April 1993, provisionally referred to for all purposes within the UN as "The former Yugoslav Republic of Macedonia" pending settlement of the difference that had arisen over its name. On 13 February 2019, it notified the UN that it had officially changed its