This Handbook offers a comprehensive examination of the Responsibility to Protect norm in world politics, which aims to end mass atrocities against civilians. The Responsibility to Protect (R2P) is amongst the most significant norms in global politics. As the authoritative guide to R2P, this edited volume gathers together the most respected and insightful voices to address key issues related to this emerging norm. The contributing authors do this over the course of three parts: Part I: The Concept of R2P Part II: Developing and Operationalising R2P Part III: The view from Over Here This book will be of much interest to students of R2P, humanitarian intervention, genocide, human rights, international law, peace studies, international organisations, security studies and IR.