Daniel Koehler is the Founding Director of the German Institute of Radicalization and De-Radicalization Studies (GIRDS) and a leading expert on terrorism, violent extremism, radicalization, and deradicalization. He is member of the Editorial Board of the International Centre for Counter-Terrorism in The Hague and a Research Fellow at the Polarization and Extremism Research and Innovation Lab of the American University in Washington, DC.