In addition to his position at ARTIS, Marc Sageman is Principal of Sageman Consulting, LLC and maintains private practice in clinical and forensic psychiatry. He also holds various academic positions relating to medicine, conflict and policy (Columbia University, University of Pennsylvania, George Washington University, University of Maryland), as well as fellowships (Foreign Policy Research Institute, Center for Strategic International Studies, American Psychiatric Association). After 9/11/01, Marc started collecting biographical material on about 400 al Qaeda terrorists to test the validity of the conventional wisdom on terrorism. As an expert on al Qaeda and related terrorist organizations, he has consulted with numerous agencies and branches of the U.S. Government, as well as foreign governments and enforcement organizations. Sageman may be the only person to have testified before both the 9/11 Commission in the U.S. and the Beslan Commission in Russia. Dr. Sageman holds a Ph.D., New York University: M.D., New York University; M.A., New York University; A.B., Harvard College. His residency in Psychiatry was at the University of Pennsylvania Medical Center.