As rising nationalism and isolationist sentiments are sweeping many countries of the Global North, the prospect of a borderless world appears to be receding. However, now more than ever is the time for voices of dissent to be heard. In No Borders, Natasha King draws on her personal experience of grassroots activism to make an eloquent and passionate contribution to the debate about contemporary borders. She aims to avoid both 'irrelevant abstraction' and 'directionless action' by presenting a theoretically informed, activist analysis that is 'fierce' as well as 'loving'. As the author explains: 'Approaching knowledge in this way enables me to draw out the tensions and dilemmas that appear in a somewhat utopian politics when practised in reality. I am not seeking to impose a single theory upon this movement, but to shed more light on its diversity' (p. 9).