1981 United Nations Secretary-General selection straw polls, an innovation that became the standard method for selecting a Secretary-General in future open selections. Waldheim's defeat also confirmed the informal two-term limit on the office of Secretary-General, and Pérez's selection firmly established the principle of regional rotation. The Secretary-General of the United Nations is appointed by the General Assembly on the recommendation of the Security Council. Therefore, candidates for the office can be vetoed by any of the permanent members. In 1981, Kurt Waldheim of Austria was finishing up his second term as Secretary-General, despite Chinese preferences for a Secretary-General from the Third World. In the 1971
United Nations Secretary-General selection went to Beijing to campaign for the position. The Chinese Foreign Minister switched to French in the middle of the interview to test Tharoor's ability to speak the language. Tharoor was the only Asian candidate who spoke French fluently, but he was vetoed by the United States. Ban Ki-moon took the precaution of attending French classes in the evenings so that he would not be vetoed by France. Gladwyn Jebb served as Executive Secretary of the Preparatory Commission of the United Nations in August 1945, being appointed Acting United Nations Secretary-General from October 1945 to February 1946. His successor, Trygve