Member states of the United Nations

Areas controlled by the People's Republic of China and the Republic of China

The Republic of China (ROC) joined the UN as an original member on 24 October 1945, and as set out by the United Nations Charter, Chapter V, Article 23, became one of the five permanent members of the United Nations Security Council.[16] In 1949, as a result of the Chinese Civil War, the Kuomintang-led ROC government lost effective control of mainland China and relocated to the island of Taiwan, and the Communist Party-led government of the People's Republic of China (PRC), declared on 1 October 1949, took control of mainland China. The UN was notified on 18 November 1949 of the formation of the Central People's Government of the People's Republic of China; however, the Government of the Republic of China continued to represent China at the UN, despite the small size of the ROC's jurisdiction of Taiwan and a number of smaller islands compared to the PRC's jurisdiction of mainland China. As both governments claimed to be the sole legitimate representative of China, proposals to effect a change in the representation of China in the UN were discussed but rejected for the next two decades, as the ROC was still recognized as the sole legitimate representative of China by a majority of UN members. Both sides rejected compromise proposals to allow both states to participate in the UN, based on the One-China policy.[17]

By the 1970s, a shift had occurred in international diplomatic circles and the PRC had gained the upper hand in international diplomatic relations and recognition count. On 25 October 1971, the 21st time the United Nations General Assembly debated on the PRC's admission into the UN,[18] United Nations General Assembly Resolution 2758 was adopted, by which it recognized that "the representatives of the Government of the People's Republic of China are the only lawful representatives of China to the United Nations and that the People's Republic of China is one of the five permanent members of the Security Council," and decided "to restore all its rights to the People's Republic of China and to recognize the representatives of its Government as the only legitimate representatives of China to the United Nations, and to expel forthwith the representatives of Chiang Kai-shek from the place which they unlawfully occupy at the United Nations and in all the organizations related to it."[19] This effectively transferred the seat of China in the UN, including its permanent seat on the Security Council, from the ROC to the PRC, and expelled the ROC from the UN. From the United Nations' perspective the "Republic of China" is not a former member. No UN member was expelled in 1971. Rather, the credentials of one Chinese delegation (from Taipei) were rejected and the credentials of another Chinese delegation (from Beijing) were accepted.

In addition to losing its seat in the UN, the UN Secretary-General concluded from the resolution that the General Assembly considered Taiwan to be a province of China. Consequently, the Secretary-General decided that it was not permitted for the ROC to become a party to treaties deposited with it.[20]

The presidency of Ma Ying-jeou saw the first participation of the Republic of China on a United Nations body in almost 40 years.

In 1993 the ROC began campaigning to rejoin the UN separately from the People's Republic of China. A number of options were considered, including seeking membership in the specialized agencies, applying for observer status, applying for full membership, or having resolution 2758 revoked to reclaim the seat of China in the UN.[21]

Every year from 1993 to 2006, UN member states submitted a memorandum to the UN Secretary-General requesting that the UN General Assembly consider allowing the ROC to resume participating in the United Nations.[22][note 28] This approach was chosen, rather than a formal application for membership, because it could be enacted by the General Assembly, while a membership application would need Security Council approval, where the PRC held a veto.[21] Early proposals recommended admitting the ROC with parallel representation over China, along with the People's Republic of China, pending eventual reunification, citing examples of other divided countries which had become separate UN member states, such as East and West Germany and North and South Korea. Later proposals emphasized that the ROC was a separate state, over which the PRC had no effective sovereignty. These proposed resolutions referred to the ROC under a variety of names: "Republic of China in Taiwan" (1993–94), "Republic of China on Taiwan" (1995–97, 1999–2002), "Republic of China" (1998), "Republic of China (Taiwan)" (2003) and "Taiwan" (2004–06).

However, all fourteen attempts were unsuccessful as the General Assembly's General Committee declined to put the issue on the Assembly's agenda for debate, under strong opposition from the PRC.[23]

While all these proposals were vague, requesting the ROC be allowed to participate in UN activities without specifying any legal mechanism, in 2007 the ROC submitted a formal application under the name "Taiwan" for full membership in the UN.[24] However, the application was rejected by the United Nations Office of Legal Affairs citing General Assembly Resolution 2758,[25] without being forwarded to the Security Council. Secretary-General of the United Nations Ban Ki-moon stated that:

The position of the United Nations is that the People's Republic of China is representing the whole of China as the sole and legitimate representative Government of China. The decision until now about the wish of the people in Taiwan to join the United Nations has been decided on that basis. The resolution (General Assembly Resolution 2758) that you just mentioned is clearly mentioning that the Government of China is the sole and legitimate Government and the position of the United Nations is that Taiwan is part of China.[26]

Responding to the UN's rejection of its application, the ROC government has stated that Taiwan is not now nor has it ever been under the jurisdiction of the PRC, and that since General Assembly Resolution 2758 did not clarify the issue of Taiwan's representation in the UN, it does not prevent Taiwan's participation in the UN as an independent sovereign nation.[27] The ROC government also criticized Ban for asserting that Taiwan is part of China and returning the application without passing it to the Security Council or the General Assembly,[28] contrary to UN's standard procedure (Provisional Rules of Procedure of the Security Council, Chapter X, Rule 59).[29] On the other hand, the PRC government, which has stated that Taiwan is part of China and firmly opposes the application of any Taiwan authorities to join the UN either as a member or an observer, praised that UN's decision "was made in accordance with the UN Charter and Resolution 2758 of the UN General Assembly, and showed the UN and its member states' universal adherence to the one-China principle".[30] A group of UN member states put forward a draft resolution for that fall's UN General Assembly calling on the Security Council to consider the application.[24]

The following year two referendums in Taiwan on the government's attempts to regain participation at the UN did not pass due to low turnout. That fall the ROC took a new approach, with its allies submitting a resolution requesting that the "Republic of China (Taiwan)" be allowed to have "meaningful participation" in the UN specialized agencies.[31] Again the issue was not put on the Assembly's agenda.[23] In 2009, the ROC chose not to bring the issue of its participation in the UN up for debate at the General Assembly for the first time since it began the campaign in 1993.[32]

In May 2009, the Department of Health of the Republic of China was invited by the World Health Organization to attend the 62nd World Health Assembly as an observer under the name "Chinese Taipei". This was the ROC's first participation in an event organized by a UN-affiliated agency since 1971, as a result of the improved cross-strait relations since Ma Ying-jeou became the President of the Republic of China a year before.[33]

The Republic of China is officially recognized by 14 UN member states and the Holy See. It maintains unofficial diplomatic relations with around 100 nations, including the United States and Japan.

Czechoslovakia joined the UN as an original member on 24 October 1945, with its name changed to the Czech and Slovak Federative Republic on 20 April 1990. Upon the imminent dissolution of Czechoslovakia, in a letter dated 10 December 1992, its Permanent Representative informed the United Nations Secretary-General that the Czech and Slovak Federative Republic would cease to exist on 31 December 1992 and that the Czech Republic and Slovakia, as successor states, would apply for membership in the UN. Neither state sought sole successor state status. Both states were readmitted to the UN on 19 January 1993.[34]

Both the Federal Republic of Germany (West Germany) and the German Democratic Republic (East Germany) were admitted to the UN on 18 September 1973. Through the accession of the East German federal states to the Federal Republic of Germany, effective from 3 October 1990, the territory of the German Democratic Republic became part of the Federal Republic of Germany, today simply known as Germany. Consequently, the Federal Republic of Germany continued being a member of the UN while the German Democratic Republic ceased to exist.[34]

The Federation of Malaya joined the United Nations on 17 September 1957. On 16 September 1963, its name was changed to Malaysia, following the formation of Malaysia from Singapore, North Borneo (now Sabah), Sarawak and the Federation of Malaya. Singapore became an independent State on 9 August 1965 and a Member of the United Nations on 21 September 1965.

Tanganyika was admitted to the UN on 14 December 1961, and Zanzibar was admitted to the UN on 16 December 1963. Following the ratification on 26 April 1964 of the Articles of Union between Tanganyika and Zanzibar, the two states merged to form the single member "United Republic of Tanganyika and Zanzibar", with its name changed to the United Republic of Tanzania on 1 November 1964.[34][35]

The USSR as its borders and republics were configured upon entry to the UN. Border changes and the dissolution of various republics happened over the course of its membership.

The Union of Soviet Socialist Republics (USSR) joined the UN as an original member on 24 October 1945, and as set out by the United Nations Charter, Chapter V, Article 23, became one of the five permanent members of the United Nations Security Council.[16] Upon the imminent dissolution of the USSR, in a letter dated 24 December 1991, Boris Yeltsin, the President of the Russian Federation, informed the United Nations Secretary-General that the membership of the USSR in the Security Council and all other UN organs was being continued by the Russian Federation with the support of the 11 member states of the Commonwealth of Independent States.[34]

The other fourteen independent states established from the former Soviet Republics were all admitted to the UN:

• The Byelorussian Soviet Socialist Republic and the Ukrainian Soviet Socialist Republic joined the UN on 24 October 1945 together with the USSR. After declaring independence, the Ukrainian Soviet Socialist Republic changed its name to Ukraine on 24 August 1991, and on 19 September 1991, the Byelorussian Soviet Socialist Republic informed the UN 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.
• 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.

Egyptian president Gamal Abdel Nasser (seated right) and Syrian president Shukri al-Quwatli sign the accord to form the United Arab Republic in 1958. The short-lived political union briefly represented both states and was used as the name of Egypt following Syria's withdrawal in 1961.

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.[34]

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.[34]

The Socialist Federal Republic of Yugoslavia disintegrated into several states starting in the early 1990s. By 2006, six UN member states existed in its former territory. Kosovo declared independence in 2008.

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.[36]
• 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.[37] On 13 February 2019, it notified the UN that it had officially changed its name, following a settlement with Greece, to the Republic of North Macedonia.[38]
• The Federal Republic of Yugoslavia (name later changed to Serbia and Montenegro) was admitted to the UN on 1 November 2000.[39]

Due to the dispute over its legal successor states, the member state "Yugoslavia", referring to the former Socialist Federal Republic of Yugoslavia, remained on the official roster of UN members for many years after its effective dissolution.[34] Following the admission of all five states as new UN members, "Yugoslavia" was removed from the official roster of UN members.

The government of the Federal Republic of Yugoslavia, established on 28 April 1992 by the remaining Yugoslav republics of Montenegro and Serbia,[40] claimed itself as the legal successor state of the former Socialist Federal Republic of Yugoslavia;[41] however, on 30 May 1992, United Nations Security Council Resolution 757 was adopted, by which it imposed international sanctions on the Federal Republic of Yugoslavia due to its role in the Yugoslav Wars, and noted that "the claim by the Federal Republic of Yugoslavia (Serbia and Montenegro) to continue automatically the membership of the former Socialist Federal Republic of Yugoslavia in the United Nations has not been generally accepted,"[42] and on 22 September 1992, United Nations General Assembly Resolution A/RES/47/1 was adopted, by which it considered that "the Federal Republic of Yugoslavia (Serbia and Montenegro) cannot continue automatically the membership of the former Socialist Federal Republic of Yugoslavia in the United Nations," and therefore decided that "the Federal Republic of Yugoslavia (Serbia and Montenegro) should apply for membership in the United Nations and that it shall not participate in the work of the General Assembly".[43][44] The Federal Republic of Yugoslavia refused to comply with the resolution for many years, but following the ousting of President Slobodan Milošević from office, it applied for membership, and was admitted to the UN on 1 November 2000.[39] On 4 February 2003, the Federal Republic of Yugoslavia had its official name changed to Serbia and Montenegro, following the adoption and promulgation of the Constitutional Charter of Serbia and Montenegro by the Assembly of the Federal Republic of Yugoslavia.[45]

On the basis of a referendum held on 21 May 2006, Montenegro declared independence from Serbia and Montenegro on 3 June 2006. In a letter dated on the same day, the President of Serbia informed the United Nations Secretary-General that the membership of Serbia and Montenegro in the UN was being continued by Serbia, following Montenegro's declaration of independence, in accordance with the Constitutional Charter of Serbia and Montenegro.[46] Montenegro was admitted to the UN on 28 June 2006.[47]

In the aftermath of the Kosovo War, the territory of Kosovo, then an autonomous province of the Federal Republic of Yugoslavia, was put under the interim administration of the United Nations Mission in Kosovo on 10 June 1999. On 17 February 2008 it declared independence, but this has not been recognised by Serbia. The Republic of Kosovo is not a member of the UN, but is a member of the International Monetary Fund[48] and the World Bank Group,[49] both specialized agencies in the United Nations System. The Republic of Kosovo has been recognised by 113 UN member states, including three of the five permanent members of the United Nations Security Council (France, the United Kingdom, and the United States); several states have suspended or withdrawn their recognition of Kosovo's independence, bringing down the total to 98. On 22 July 2010, the International Court of Justice, the primary judicial organ of the UN, issued an advisory opinion, ruling that Kosovo's declaration of independence was not in violation of international law.[50]

Indonesian president Sukarno's decision to withdraw from the United Nations in 1965 is the only instance of a withdrawal of membership in UN history. Indonesia rejoined the UN a year later.

Since the inception of the UN, only one member state (excluding those that dissolved or merged with other member states) has unilaterally withdrawn from the UN. During the Indonesia–Malaysia confrontation, and in response to the election of Malaysia as a non-permanent member of the United Nations Security Council, in a letter dated 20 January 1965, Indonesia informed the United Nations Secretary-General that it had decided "at this stage and under the present circumstances" to withdraw from the UN. However, following the overthrow of President Sukarno, in a telegram dated 19 September 1966, Indonesia notified the Secretary-General of its decision "to resume full cooperation with the United Nations and to resume participation in its activities starting with the twenty-first session of the General Assembly". On 28 September 1966, the United Nations General Assembly took note of the decision of the Government of Indonesia and its President invited the representatives of that country to take their seats in the Assembly.[34]

Unlike suspension and expulsion, no express provision is made in the United Nations Charter of whether or how a member can legally withdraw from the UN (largely to prevent the threat of withdrawal from being used as a form of political blackmail, or to evade obligations under the Charter, similar to withdrawals that weakened the UN's predecessor, the League of Nations),[51] or on whether a request for readmission by a withdrawn member should be treated the same as an application for membership, i.e., requiring Security Council as well as General Assembly approval. Indonesia's return to the UN would suggest that this is not required; however, scholars have argued that the course of action taken by the General Assembly was not in accordance with the Charter from a legal point of view.[53]