This analysis of the evolution of religious political violence outlines the differences between secular and religious political violence, on ideological, strategic, and tactical levels before comparing the concept of Holy War in Judaism, Christianity, and Islam. Lastly, it shows how modern radical monotheistic religious groups interpret and manipulate their religious sources and ideas to advocate their political agendas, including the practice of violence. A unique comparative study of religious political violence across Judaism, Islam, and Christianity, this text features many international case studies from the Crusades to the Arab Spring.