- European Commission Expert Group on Violent Radicalisation, member
- International Summit on Democracy, Terrorism and Security participant
- Studies in Conflict and Terrorism editorial board
- "Maghreb Immigrants Becoming Suicide Terrorists. A Case Study on Religious Radicalization Processes in Spain," in Ami Pedahzur (ed.), Root Causes of Suicide Terrorism. The Globalization of Martyrdom, (London and New York: Routledge, 2006), pp. 179-198 (coauthored with fernando Reinares).