Authored by a collective of researchers, this critical study delves into the complex and often contentious relationship between the Salafi movement and the phenomenon of Takfiri terrorism. The book meticulously analyzes the ideological underpinnings of both, seeking to distinguish authentic Salafi principles from the extremist interpretations that lead to violence and excommunication of fellow Muslims. It explores the historical, political, and theological factors that contribute to the emergence of Takfiri groups, offering an evidence-based perspective on whether Salafism is an incubator for extremism or if these violent ideologies represent a fundamental deviation from its core tenets.