Mr. Dunbar is a SIPA alumnus. He was a U.S. diplomat for 31 years and served as Ambassador to Yemen during the 1991 Gulf War. Earlier, he was Ambassador to Qatar and Chargé d'Affaires in Kabul during the Soviet Union's occupation of Afghanistan. He also served in Iran, Afghanistan, Morocco, Algeria, and Mauritania. In 1998, he was Secretary-General Kofi Annan's Special Representative responsible for the U.N.'s effort to organize a referendum in Western Sahara, which has been occupied by Morocco since 1975. He is currently Warburg Professor in International Relations at Simmons College in Boston.