This volume is a significant and welcome addition to the literature and should be read by academics, practitioners, and government officials. Its objective is to provide an up-to-date overview of contemporary scholarly research, emphasize central theoretical insights, and identify questions for future research. -- Ross Fetterly, Journal of Peace Research Although peacekeeping has evolved its scope and depth during recent decades, research into its effectiveness and value for money is still scarce. This Handbook delivers an excellent overview of existing research as well as policy and operational developments in peacekeeping. It also identifies aspects in need of further research. The volume is a very useful tool for researchers, policy developers and practitioners. I highly recommend it for reading by anyone working in or with peacekeeping or solely interested in this subject. -- Maria Appelblom, Police Chief Superintendent, Swedish Police The literature on peacekeeping has blossomed in recent years. This Handbook includes chapters by many of the leading scholars of contemporary peacekeeping. It summarizes and furthers key debates about the nature and legitimacy of peacekeeping, what peacekeepers do, their effectiveness, and ongoing challenges. It represents an important and must-read contribution. -- Lise Morjé Howard, Georgetown University, US With valuable contributions from preeminent peacekeeping researchers, this Handbook will provide useful insights to peacekeeping scholars and practitioners alike, and it will make an excellent college or graduate text. I learned a lot from it. -- Michael Gilligan, New York University, US