In No Borders, Natasha King draws on more than a decade of experience as a migrant rights activist as well as extensive research in Greece and Calais in order to explore the dilemmas and challenges involved in translating the “No Borders” slogan into practice. What does it mean to try to make this idea a reality? To answer that, she examines where and how activists have so far succeeded, and the difficulties that are currently holding them back. Wide-ranging and interdisciplinary, No Borders is vital reading for anyone interested in how to make radical alternatives a genuine possibility for our times. Raising crucial questions about the nature of resistance, King shows that, far from being an idle fantasy, the ideal of a world without borders is very much of the here and now.