This volume is a collection of papers presented at the conference ‘Pluralism v Harmonization: National Adjudication of International Crimes’ that was held in June 2012 in Amsterdam. The publication would have been impossible without support from a number of organizations and individuals. First of all, we warmly thank the authors of the chapters featured in this book for their considered and thought-provoking contributions to the debate on pluralism in international criminal law, for their willingness to challenge the assumptions and boundaries of mainstream discourse, and, last but not least, for their patience with the editors. We gratefully acknowledge the financial support of the Dutch Royal Academy of Sciences (KNAW), which provided generous funding for the organization of the conference. Further, we would like to thank the Dutch Scientific Organization (NWO) for sponsoring the VIDI research programme ‘Dealing with Divergence: National Adjudication of International Crimes’. The editing work on this book was carried out at the Faculty of Law of the Vrije Universiteit Amsterdam. We are indebted to our colleagues at the Faculty and especially at its Department of Criminal Law and Criminology for their support and for the inspiring and vibrant working environment. Jan Galdiga was an indispensable part of the editorial team. We are grateful to him for all his assistance in bringing this project to fruition. The painting used as the artwork on the book cover is by Moscow-based artist Vasiliy Tsabadze, whom we thank for the permission to use his work. We felt that it captures well the idea of the many faces of pluralism. Finally, many thanks to the international law team at Oxford University Press for their guidance throughout the process of preparing this book for publication. We hope that this volume will spark a broader interest in the pluralistic nature of international criminal law and procedure. We are looking forward to the future debates.