Lederless Jihad by Sageman, Mark

Terror Networks in the Twenty-First Century

A sociological analysis arguing that the post‑9/11 jihadist threat is largely decentralized and bottom‑up, arising from small, self‑organizing circles of friends and relatives who radicalize through shared grievances, online propaganda, and mutual reinforcement rather than orders from a hierarchical command. It outlines a common pathway of moral outrage, ideological framing, peer bonding, and the gradual removal of barriers to action, supported by biographical data and case studies. The book challenges the notion of a centrally directed global network and urges policy responses focused on community resilience, precise law enforcement, and avoiding broad, militarized overreactions.

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