The rhetoric from the triumphant Brexit camp was clear on 24 June. The EU, long susceptible to decay, was now condemned to collapse and the UK was better off out. This was a statement for our times, where all setbacks are viewed as catastrophes. But amid all the uncertainty about the UK’s future as it moves (gradually) towards the exit door, there is a secondary issue of primary importance: what lies ahead for the EU, and how might it change in response to the loss of one of its key constituents?