United Nations Secretary-General selection it would increase the concentration of power in the United Nations. The office is subject to a term limit of two full terms. U Thant served three terms, but his first two terms were partial terms that added up to one full term. In 1981, China cast 16 vetoes against Kurt Waldheim's selection for a third term, and Waldheim eventually suspended his candidacy. Since 1981, no Secretary-General has attempted to run for a third term. The office of Secretary-General is rotated among the regional groups of the UN. Each region gets two or three consecutive terms as Secretary-General. Candidates from
Under-Secretary-General of the United Nations Under-Secretary-General of the United Nations An Under-Secretary-General of the United Nations (USG) is a senior official within the United Nations System, normally appointed by the General Assembly on the recommendation of the Secretary-General for a renewable term of four years. Under-Secretary-General is the third highest rank in the United Nations, after the Secretary-General and the Deputy Secretary-General. The rank is held by the heads of different UN entities, certain high officials of the United Nations Secretariat, and high-level envoys. The United Nations regards the rank as equal to that of a cabinet minister of a member state, and under-secretaries-general have