Daniel Byman is a professor in the School of Foreign Service with a concurrent appointment with the Department of Government. He is also the Vice Dean for Undergraduate Affairs. He served as director of Georgetown's Security Studies Program and Center for Security Studies from 2005 until 2010. He also leads at Georgetown team in teaching a "Massive Open Online Course" (MOOC) on terrorism and counterterrorism for EdX. Professor Byman is also a part-time Senior Fellow at the Center for Middle East Policy at the Brookings Institution. From 2002 to 2004 he served as a Professional Staff Member with the 9/11 Commission and with the Joint 9/11 Inquiry Staff of the House and Senate Intelligence Committees. Before joining the Inquiry Staff he was the Research Director of the Center for Middle East Public Policy at the RAND Corporation. Previous to this, Professor Byman worked as an analyst on the Middle East for the U.S. government.

Professor Byman is the author of Al Qaeda, the Islamic State, and the Global Jihadist Movement: What Everyone Needs to Know (Oxford, 2015); A High Price: The Triumphs and Failures of Israeli Counterterrorism (Oxford, 2011); The Five Front War: The Better Way to Fight Global Jihad (Wiley, 2007); Deadly Connections: States that Sponsor Terrorism (Cambridge, 2005); Keeping the Peace: Lasting Solutions to Ethnic Conflict (Johns Hopkins, 2002); and co-author of Things Fall Apart: Containing the Spillover from the Iraqi Civil War (Brookings, 2007) and The Dynamics of Coercion: American Foreign Policy and the Limits of Military Might (Cambridge, 2002). Professor Byman has also written extensively on a range of topics related to terrorism, international security, civil and ethnic conflict, and the Middle East. His recent articles have appeared in Foreign Affairs and Foreign Policy, as well as journals including Political Science Quarterly, Studies in Conflict and Terrorism, International Security, and Journal of Strategic Studies.