This book is completely updated and revised new edition of the leading textbook on migration. The best and leading introduction to the topic for students, policy-makers and general readers: now in a systematically revised and updated 4th edition. The book offers a genuinely global analysis but also provides detailed coverage of each region. It is completely rewritten and reorganised with increased coverage of security and development issues and of multiculturalism and its critics. It is clear and accessible with an increased number of all-new images and charts.International migration is an ever-more central aspect of globalization in the contemporary world. This 4th edition of the leading text in the field has been completely recast and updated to provide a comprehensive assessment of the nature, extent and dimensions of international population movements and of their consequences.