From 1977, undergraduate studies in International Relations, San Francisco State University; 1988, PhD in International Law and Politics, Graduate School of International Studies, University of Denver. Many years of experience at the Ministry of Foreign Affairs of the Islamic Republic of Iran. Formerly: Deputy Minister for Legal and International Affairs; Ambassador Plenipotentiary and Permanent Representative of the Islamic Republic of Iran to the UN, New York; Chairman, Sixth (Legal) Committee of the 47th UN General Assembly; Chairman, UNESCO Cultural Commission; Member, Group of Eminent Lawyers to Amend the Charter of the Organization of Islamic Conference; Vice-President, UN General Assembly; Chairman, UN Disarmament Commission; Chairman, Political Committee, 12th Non-Aligned Movement Summit, Durban; in charge of the Political Committee, OIC Summit, Tehran; Head, Executive Committee, Islamic Inter-parliamentary Meeting, Tehran. Author books and journal papers in English and Persian on multilateral diplomacy, international organizations, disarmament and other politico-security issues.