'The topic of this book is as important and timely as its contributions are expert and original. As the phenomenon of mass migration has come to increased prominence on the agenda of global public policy, so too the efforts made by states to control their borders, restrict immigration and engage in cross-border law-enforcement and surveillance have raised important questions about the negative effects on human rights protection of cooperative activities by states at a regional and global level. This book offers an impressive and authoritative tour d’horizon of the key legal aspects, and as such is essential reading for policy makers, practitioners, academics and students working on the topic.' - Ralph Wilde, Faculty of Laws, University College London, UK