ISIS-the Islamic State of Iraq and Syria-has taken on the mantle of being the single most dangerous terrorist threat to global security since al-Qaeda. In Defeating ISIS, internationally renowned intelligence veteran, author, and counterterrorism expert Malcolm Nance gives an insider’s view to explain the origins of this occult group, its violent propaganda, and how it spreads its ideology throughout the Middle East and to disaffected youth deep in the heart of the Western world. Most importantly, Defeating ISIS gives an amply illustrated, step-by-step analysis of the street-level tactics the group has employed in assaults against fortified targets, in urban combat, and during terrorist operations such as those in Paris during the November 13 attacks.