In this edition of FPRI Radio Michael Noonan, the director of FPRI's Program on National Security, sits down and speaks with Harvard University's Vera Mironova on her new book From Freedom Fighters to Jihadists. This book, based upon Mironova's extensive field research, deals with how armed groups manage their human resources. They discussed the role of different indigenous groups and foreign fighters in Syria and also discussed how Dr. Mironova conducts field research.