Petter Nesser is a senior researcher with the Norwegian Defence Research Establishment (FFI) and an associate professor with BI Norwegian Business School. He is a political scientist, historian and Arabist, educated at the University of Oslo (UiO) and The American University in Cairo (AUC). Nesser has conducted extensive research on European jihadism for more than a decade while concentrating on radicalization, why and how terrorist cells emerge, and how they operate. His research focuses currently on jihadism worldwide in the post-IS era, while working on a book about entrepreneurs of transnational terror networks. Nesser acts as advisor to Norwegian authorities on issues related to counterterrorism and the prevention of extremism. He has communicated research findings in Norway and internationally, through academic conferences and teaching, speeches before public sector and NGOs, and via media. He is author of Islamist Terrorism in Europe (Hurst/Oxford University Press, 2015, 2018).