Based in Germany, Dr. Koehler conducts research on terrorism, radicalization, and de-radicalization (right-wing, left-wing, and Islamic extremism) processes and programs; has worked in the field on de-radicalization involving family counselors in multiple programs for over 12 years; developed methodologies for de-radicalization; in 2014 Co-founder of the first peer-reviewed open access journal on de-radicalization (The Journal for Deradicalization, www.journal-derad.com), founded with the German Institute for Radicalization and De-radicalization Studies (GIRDS) in 2014; first courtroom expert on de-radicalization in the United States District Court in Minneapolis in 2016; first courtroom expert on de-radicalization in First court expert; Editorial Board Member of the International Center for Counterterrorism in The Hague in July 2017; Research Fellow at the Polarization and Extremism Research and Innovation Lab (PERIL) at American University in Washington, DC in November 2019; and in the United Kingdom in 2022. He was also appointed Associate Fellow at the Royal United Service Institute (RUSI), a dual appointment. D. (Political Science, Princeton University). His most recent publication is From Traitor to Zealot: Exploring the Phenomenon of Side-Switching in Extremism and Terrorism (Cambridge University).
Dr. Daniel Koehler
Co-founder and Editor-in-Chief, The Journal for Deradicalization