Timothy Sisk is a Senior Research Associate at the Graduate School of International Studies at the University of Denver. At GSIS, he is developing a program of studies and conducting applied research in human security and international peace. His research is supported currently by the John D. and Catherine T. MacArthur Foundation and the Carnegie Corporation of New York. Previously a Program Officer and Research Scholar at the federally chartered United States Institute of Peace in Washington, D.C., Dr. Sisk was a Washington-based scholar and analyst of international relations and U.S. foreign policy for 15 years. He served from 1984-89 as a legislative assistant to U.S. Senator Dale Bumpers. Prior to the Senate, he was an international journalist reporting from South Africa. He is the author of several books, including Democratization in South Africa (Princeton, 1995) and Power Sharing and International Mediation in Ethnic Conflicts (Carnegie Commission on Preventing Deadly Conflict, 1996).