This book examines common theoretical conceptualization of terrorism, including all the following dimensions:Macro-criminological theoriesPsycho-criminological models of aggressionPsycho-criminological models of risk and need (RNR)PsychopathologySocial psychology, particularly in the areas of intergroup relations, identity, need for closure, and, the quest for significanceIdeological and religious passions and extremismInternational in scope, each chapter draws on a combination of these frameworks, exemplified in a collection of case series and studies, to help students, practitioners, and researchers better understand these phenomena.