'Theoretically rich and storyline-driven, From Traitor to Zealot is an instant classic of the field. Koehler shines a bright light on a counter-intuitive phenomenon many are anecdotally aware of - extremists who switch sides - but the book will surprise many by outlining how common, complex and dramatical the process is.' Paul Gill, Professor of Security and Crime Science, University College London, UK
Foreword; Preface; 1. Betraying the cause? Side-switching and violent extremism; 2. Nation, race and anti-semitism: switching to far-right extremism; 3. Joining the far-left; 4. Fighting on the path of Allah: joining Islamic extremism from the far-right and far-left; 5. Who are extremist side-switchers and what drives them? Towards a theory of motivations and defector lifecycles; 6, Breaking the cycle: learning how to improve counter-radicalization, counterterrorism and deradicalization programs; 7. Conclusions.