Dr. Omar Ashour is a Senior Fellow at the Center for Global Policy. He is also an Associate Professor of Security Studies and Head of the Critical Security Studies Program at the Doha Institute for Graduate Studies. He was formerly a Senior Lecturer in Security Studies at the University of Exeter and an Associate Fellow at Chatham House in London. He was the director of the doctoral program at the in the Institute of Arab and Islamic Studies in Exeter. He is the author of The De-Radicalization of Jihadists: Transforming Armed Islamist Movements, the first book on transitions from armed to unarmed activism by several Islamists organizations in the Middle East and North Africa. His forthcoming book focuses on how the Islamic State (IS) Organization militarily endured and expanded. Dr. Ashour specializes in asymmetric armed conflict (with focus on guerrilla warfare strategies), Islamist movements, insurgency/counterinsurgency, terrorism studies, and democratization (with a main focus on civil-military relations and security sector reform). He previously served as a senior consultant for the United Nations on security sector reform, counter-terrorism, and deradicalization issues. He is a regular contributor to media outlets including the BBC, al-Jazeera, Sky News, CNN and others. His op-eds are frequently published in Foreign Policy, The Washington Post, The Guardian, The Independent, al-Jazeera.net, CNN, Project Syndicate and other media outlets in 12 languages, in over 60 countries.