"This book presents the first systematic and comprehensive attempt by legal scholars to conceptualize the theory of emergency powers, combining post-September 11 developments with more general theoretical, historical and comparative perspectives. The authors examine the interface between law and violent crises through history and across jurisdictions, bringing together insights gleaned from the Roman republic and Jewish law through to the initial responses to the July 2005 attacks in London. The book examines three unique models of emergency powers that are used to offer a novel conceptualization of emergency regimes, giving a coherent insight into law's interface with and regulation of crisis and a distinctive means to evaluate the legal options open to states for dealing with crises. Particular attention is given to the interface between international law and regulatory mechanisms and emergency powers, as a key element of the contemporary political response to violent crises."--BOOK JACKET.