What is the impact of contemporary migrations on States, borders and the life of individuals? Are we all becoming “cosmopolitan persons”, whose lives and solidarities are no longer shaped by the borders we happen to live in? Are twenty-first century migrants pioneering this change? While not hoping to fully answer all these questions, this volume offers some insights on the complexity that characterises the contemporary migratory panorama. At a time at which migration hits the very top of international political agendas, and has converted into a central concern not only of States, but also of enterprises, families, and the overall public opinion, this work collects the contributions of a number of scholars observing various aspects of the phenomenon under the magnifying lens of political science and sociology.