1996 United Nations Secretary-General selection a term beginning 1 January 1997. The 1996 selection marks the only time that a sitting Secretary-General was denied a second term. The elderly Boutros-Ghali initially intended to serve only one term, but he ran for a second term in 1996. Traditionally, the Secretary-General is entitled to run unopposed for a second term. No sitting Secretary-General had ever been denied a second term by a veto. In the 1950 selection, Trygve Lie was vetoed by the Soviet Union, but he was re-appointed by the General Assembly without a recommendation from the Security Council. In the 1976 selection, Kurt Waldheim received
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