Andrew S. Natsios was a visiting fellow at the Center for Global Development and Distinguished Professor in the Practice of Diplomacy at Georgetown University’s Walsh School of Foreign Service. Natsios served as Administrator of the U.S. Agency for International Development from 2001 to January 2006. In addition to teaching he served as President Bush’s Special Envoy to Sudan from October 2006 to December 2007. From 1993 to 1998, Natsios was vice president of World Vision U.S., the largest faith-based NGOs in the world. Natsios was a member of the US Army Reserves for 23 years, served in the Gulf War in 1991 on active duty and was a Lt. Colonel when he retired in the 1990’s. Natsios is the author of two books, U.S. Foreign Policy and the Four Horsemen of the Apocalypse (1997) and The Great North Korean Famine (2001), collaborated on eight other books, and numerous articles.