Won't support Brexit deal that separates N. Ireland from UK: DUP

Northern Ireland's DUP has written to British Prime Minister Theresa May to say that it will not support a Brexit deal that leaves Northern Ireland separated from the rest of the United Kingdom.

The European Union wants a customs border in the Irish Sea, between Northern Ireland and the rest of the United Kingdom, in the event of a no-deal Brexit, a letter from Theresa May seen by the London Times newspaper suggested.