Daniel Byman is a Professor at Georgetown University’s School of Foreign Service and a Senior Fellow at the Center for Middle East Policy at the Brookings Institution. Dr. Byman has served as a Professional Staff Member with both the National Commission on Terrorist Attacks on the United States (“The 9-11 Commission”) and the Joint 9/11 Inquiry Staff of the House and Senate Intelligence Committees. He has also worked as the Research Director of the Center for Middle East Public Policy at the RAND Corporation and as an analyst of the Middle East for the U.S. intelligence community. Dr. Byman has written widely on a range of topics related to terrorism, international security, and the Middle East. His publications have appeared in The New York Times, The Wall Street Journal, Foreign Affairs, International Security, and numerous other scholarly, policy, and popular journals. His latest book is Road Warriors: Foreign Fighters in the Armies of Jihad (Oxford, 2019).