Terrorism is a psychological weapon; by definition its purpose is to spread terror or fear in order to achieve goals unattainable by more conventional means. It is a weapon of asymmetric warfare whose success or failure is entirely dependent on the psychological reactions of its targets. Despite this, interest in the effects of terrorism from a behavioral and psychological perspective is relatively recent, dating initially from the 1990s and boosted by the events of September 11th 2001. This book presents papers delivered at the NATO Advanced Research Workshop (ARW) Risk Management of Terrorism Induced Stress – Guidelines for the Golden Hours (Who, What and When) held in Odesa, Ukraine, from 16-19 September 2018. The aim of the workshop was to bring together experts from the military, science and policy to revisit old guidelines and inform new research into novel approaches. The focus of the workshop was the so-called 'Golden Hours'; the period immediately following a traumatic event in which therapeutic interventions are thought to have the most impact. What needs to be done in the immediate aftermath of terror, who is vulnerable and who is resilient, and when is intervention appropriate? The book is divided into sections covering the areas of biology, interventions, special populations, additional perspectives, policy, déjà-vu and future directions. Providing a comprehensive overview of the management of terror-related stress, the book will be of interest to planners and policy makers, as well as mental health professionals working with PTSD and other consequences of terror events.