sentences:  Under Presidents Ismail al-Azhari and Gaafar Nimeiry Dr. Deng served as Human Rights Officer in the United Nations Secretariat (from 1967 to 1972) and subsequently as the Ambassador of Sudan to Canada, Denmark, Finland, Norway, Sweden and the United States.He also served as the Sudan's Minister of State for Foreign Affairs.After leaving his country's service, he was appointed the first Rockefeller Brothers Fund Distinguished Fellow.