Ron Hassner is an associate professor of international relations in the political science department at the University of California, Berkeley. His research interests include religion and conflict, religion in the military and territorial disputes. Hassner is the author of War on Sacred Grounds and editor of Religion in the Military Worldwide.

Johanna Birnir is an associate professor of government and politics at the University of Maryland in College Park, as well as a researcher at the National Consortium for the Study of Terrorism and Responses to Terrorism. She is an expert on terrorism and society.

Omar Ahmed Shahin is an imam, a lawyer and director of the Islamic studies program at the Graduate Theological Foundation in Mishawaka, Ind. He is an expert on Islam in the Middle East and in the U.S. and Islamic law and the family.

Farah Pandith is an adjunct senior fellow at the Council on Foreign Relations in Washington, where she is an expert on the Islamic State group and its efforts to recruit young Muslims. She is writing a book on extremism. Contact via her research assistant, Zach Shapiro.

Maajid Nawaz is co-founder of the Quilliam Foundation, an international think tank based in London that focuses on integration, citizenship and identity, religious freedom, extremism and immigration. He is the author of Radical: My Journey Out of Islamic Extremism. He gave a TED Talk on fighting religious extremism.

Angel Rabasa is a senior political analyst for the Rand Corp. in Washington. He has written widely on Islamic extremism in Turkey, India, East Africa and Southeast Asia. Contact via Rand’s Office of Media Relations.

Alyssa Ayres is a senior fellow at the Council on Foreign Relations and an expert on religious extremism in Bangladesh. She testified about religious extremism in Bangladesh before Congress. Contact via her research associate, Ashlyn Anderson.

Merete Bilde is policy advisor at the European External Action Service (EEAS), the European Union’s foreign and security policy service. She works at the intersection of religion and politics.

Sue Breeze leads the Middle East and Asia team in the United Kingdom’s Foreign and Commonwealth Office. She previously worked on freedom of religion or belief, anti-Semitism and post-Holocaust issues.