May's plan to give Stormont a backstop veto enrages EU envoys

UK insists on Northern Ireland assembly vote before Brexit border measures can come in

EU diplomats have accused Theresa May of trying to delay resolution of the Irish border problem until after Brexit day by insisting upon Stormont having a final veto before any "backstop" solution can come into force.

Senior diplomats involved in the negotiations have reacted furiously to the details of a fresh UK proposal for avoiding a hard border on the island of Ireland, briefed to the Irish PM, Leo Varadkar, at last week's Salzburg summit.