May's 'unilateral guarantees' won't protect UK citizens in Europe

UK ministers and leading Brexit supporters have been falling over themselves to claim the moral high ground ever since Theresa May's post-Salzburg speech, in which she seemed to be preparing the ground for a no-deal Brexit by stating unilaterally that the 3.3 million EU citizens would be able to stay in the UK - whatever the outcome of negotiations.

Instead of focussing on ring-fencing the political agreement already reached on citizens' rights, 'the EU-27 must now do the same for our 1...