The most general aim of this book is to advance, if a little, our understanding of radicalization as it relates to jihadi terrorism. This calls for a word of caution, however. While our empirical cases focus on jihadi manifestations and consequences of radicalization, our conceptual chapters drive home a set of ideas, assumptions, and logics that are not unique to jihadi radicalization or violence. In other words, while the book emphasizes Islam-inspired radicalization, it acknowledges that radicalization boasts different meanings and has an equally powerful bearing on other types of beliefs (e.g., political and economic). The book sits, therefore, between conceptual apparatuses with a broader scope and reach and case studies that vet their relevance in specific contexts.