This project started when I was at the University of Oxford, as Lecturer in International Human Rights and Refugee Law at the Refugee Studies Centre. I would like to thank the British Academy for a small grant which prompted the exploration of some of the issues in this publication, and to the Oppenheimer Fund for some seed funding into research assistance. Thank you to Marina Sharpe for being my research assistant in the early stages of this project and for her immaculate collection and filing of materials on nationality and statelessness. I need to thank Laura, my co-editor, for coming to the rescue of this project when I moved to take up my current position at UNHCR in Geneva as Senior Legal Coordinator and Chief of the Protection Policy and Legal Advice section. The project has been an immensely enjoyable one, and it would not have happened without her. A great deal of debt is owed to the excellent contributions and the amazing patience of our many contributors. Thanks also to Finola O’Sullivan, Elizabeth Spicer and the rest of the team at Cambridge University Press for their positive support of this project and its evolution; as well as the Statelessness Unit at UNHCR, in particular Mark Manly for his openness to new arguments in the statelessness area and keen eye for errors(!). I am also particularly pleased that all of our royalties from this book will help support statelessness projects around the world.