He was a senior terrorism analyst in the U.S. Department of State’s Office of Intelligence and Threat Analysis from 1977-2005. During that time he was responsible for analyzing terrorism in Western Europe, the Former Soviet Union, and the Middle East and Asia. He was selected in 1992 and 2004 for the Director of Central Intelligence’s Exceptional Intelligence Analyst Program. He is a contributing editor for the international journal “Studies in Conflict and Terrorism” and an associate of the National Intelligence Council’s Global Expertise Reserve Program. He is a consultant to Innovative Analytics and Training, Inc and gives recurring lectures on terrorism at CIA University, the Kent School for Intelligence, the National Foreign Affairs Training Center, the Joint Military Intelligence Training Center, and the FBI Academy at Quantico. Since 1990, he has taught courses on terrorism at five local universities. At present, he teaches a basic course on terrorism at George Mason University.