"Greig and Diehl have produced a concise, coherent and systematic book on mediation in international and civil conflicts. They do a marvellous job of summarizing contemporary literature, bringing together various themes and inferences on mediation in a way that is not only comprehensive but accessible, and they quite adroitly mix results from systematic data analysis with case histories that resonate in the public domain. This is the type of book that those of us who teach courses on conflict management have been looking for. " Patrick Regan, University of Birmingham "As the popularity of international mediation surges, the volume of research on the topic expands. This link between practice and research runs through this excellent book. The authors illuminate the value of systematic research for mediator action, including case and comparative studies, and their broad definition of mediation encompasses goals, forms, activities, and contexts. This book is a must read for international relations and conflict resolution scholars as well as for practitioners of the very old art of mediation." Daniel Druckman, George Mason University and University of Southern Queensland