". . . examines the sources and trajectories of radicalization . . . [the authors] propose twelve mechanisms that can move individuals, groups, and mass publics from political indifference to sympathy and support for terrorist violence. . . synthesizes original and existing research to offer a rigorously informed overview that will enable readers to see beyond the relentless news cycle and understand where terrorism comes form and how best to respond to it"--Adapted from publisher description.