Charles Grant, director of the Centre for European Reform speaks to Edward Stourton about how the European Union might change after Britain leaves. "The wind is back in Europe's sails", according to European Commission President Jean-Claude Juncker. In September, in his annual address to the European Parliament, he set out a bold dream for the future. Soon afterwards it was echoed by another, this time from French President Emmanuel Macron who declared that "the only path that assures our future is the rebuilding of a Europe that is sovereign, united and democratic". Amongst the proposals that the two leaders put forward were a European budget run by a European finance minister, an enlargement of the Schengen passport-free travel zone, and much closer collaboration on tax, defence, and a host of other issues.