<P> Since its inception, no member state has been suspended or expelled from the UN under Articles 5 and 6 . However, in a few cases, states were suspended or expelled from participating in UN activities by means other than Articles 5 and 6: </P> <Ul> <Li> On 25 October 1971, United Nations General Assembly Resolution 2758 was adopted, which recognized the People's Republic of China instead of the Republic of China (since 1949 controlling only Taiwan) as the legitimate representative of China in the UN and effectively expelled the Republic of China from the UN in 1971 (see the section Former members: Republic of China). This act did not constitute as the expulsion of a member state under Article 6, as this would have required Security Council approval and been subjected to vetoes by its permanent members, which included the Republic of China itself and the United States, which at that time still recognized the Republic of China . </Li> <Li> In October 1974, the Security Council considered a draft resolution that would have recommended that the General Assembly immediately expel South Africa from the UN, in compliance with Article 6 of the United Nations Charter, due to its apartheid policies . However, the resolution was not adopted because of vetoes by three permanent members of the Security Council: France, the United Kingdom, and the United States . In response, the General Assembly decided to suspend South Africa from participation in the work of the Assembly's 29th session on 12 November 1974; however, South Africa was not formally suspended under Article 5 . The suspension lasted until the General Assembly welcomed South Africa back to full participation in the UN on 23 June 1994, following its successful democratic elections earlier that year . </Li> <Li> On 28 April 1992, the new Federal Republic of Yugoslavia was established, by the remaining republics of Serbia and Montenegro of the former Socialist Federal Republic of Yugoslavia . 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". It did not apply for membership until Slobodan Milošević was ousted from the presidency and was admitted on 1 November 2000 (see the section Former members: Yugoslavia). </Li> </Ul> <Li> On 25 October 1971, United Nations General Assembly Resolution 2758 was adopted, which recognized the People's Republic of China instead of the Republic of China (since 1949 controlling only Taiwan) as the legitimate representative of China in the UN and effectively expelled the Republic of China from the UN in 1971 (see the section Former members: Republic of China). This act did not constitute as the expulsion of a member state under Article 6, as this would have required Security Council approval and been subjected to vetoes by its permanent members, which included the Republic of China itself and the United States, which at that time still recognized the Republic of China . </Li> <Li> In October 1974, the Security Council considered a draft resolution that would have recommended that the General Assembly immediately expel South Africa from the UN, in compliance with Article 6 of the United Nations Charter, due to its apartheid policies . However, the resolution was not adopted because of vetoes by three permanent members of the Security Council: France, the United Kingdom, and the United States . In response, the General Assembly decided to suspend South Africa from participation in the work of the Assembly's 29th session on 12 November 1974; however, South Africa was not formally suspended under Article 5 . The suspension lasted until the General Assembly welcomed South Africa back to full participation in the UN on 23 June 1994, following its successful democratic elections earlier that year . </Li>

When did saudi arabia became a member of the un