When Theresa May said that those who call themselves ‘citizens of the world’ are in fact ‘citizens of nowhere’ she caused a great outcry. For some, it signalled a post-Brexit revival of nationalism. But is it possible to be a world citizen in any meaningful sense? Does the label rather imply a rejection of concrete obligations and commitments in favour of a cosmopolitan, consumer lifestyle? Filmed at the Battle of Ideas 2017, the speakers are Dolan Cummings, Angie Hobbs, Karl-Erik Norrman and David Goodhart. The chair is Jim Butcher.