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 independent of the Secretary-General, and he is therefore unable to remove them from office without the General Assembly's consent. This restriction has been seen by many commentators to weaken the Secretary-General's ability to provide strong leadership and management within the United Nations System. Some senior posts within the UN System have the equivalent rank of Under-Secretary-General but are either not entitled or choose not to use the formal title. The most prominent example of this is the Administrator of the United Nations Development Programme, who is often referred to as the third most senior official within the UN System yet