Amid pervasive and toxic language, and equally ugly ideas, suggesting that migrants are invaders and human mobility is an aberration, one might imagine that human beings are naturally sedentary: that the desire to move from one's birthplace is abnormal. As the contributors to this volume attest, however, migration and human mobility are part and parcel of the world we live in, and the continuous flow of people and exchange of cultures are as old as the societies we have built together. Together, the chapters in this volume emphasise the diversity of the origins, consequences and experiences of human mobility in the Middle East. From multidisciplinary perspectives and through case studies, the contributors offer the reader a deeper understanding of current as well as historical incidences of displacement and forced migration. In addition to offering insights on multiple root causes of displacement, the book also addresses the complex challenges of host-refugee relations, migrants' integration and marginalisation, humanitarian agencies, and the role and responsibility of states. Cross-cutting themes bind several chapters together: the challenges of categories; the dynamics of control and contestation between migrants and states at borders; and the persistence of identity issues influencing regional patterns of migration.