The Latest on Brexit negotiations (all times local):
10:50 a.m.
British Prime Minister Theresa May is facing a Brexit crisis, with her political allies insisting they will scuttle a divorce deal with the European Union over the issue of the Irish border.
The Democratic Unionist Party is opposed to any customs checks between Northern Ireland and the rest of the U.K. after Britain leaves the European Union. But EU officials say that may be the only way to avoid a hard border between Northern Ireland and Ireland.
DUP Brexit spokesman Sammy Wilson said "it is probably inevitable that we will end up with a no-deal scenario" because there was no agreement that would be accepted by Britain's Parliament.
High-level talks in Brussels ended without agreement Sunday, and no more are planned before an EU summit starting Wednesday.
International Development Secretary Penny Mordaunt said Monday that "everyone needs to calm down" and support May as she tries to get a deal with the EU.
10:05 a.m.
Britain's foreign secretary is cautiously optimistic that the U.K. and the European Union will secure an agreement on Britain leaving the bloc although perhaps not at an EU summit this week.
Jeremy Hunt said Monday that "there are one or two very difficult outstanding issues, but I think we can get there. Whether we do this week or not, who knows?"
Hunt said at a meeting of EU foreign ministers in Luxembourg that "everyone is trying incredibly hard. I think it is possible to do it and I think with good will on both sides we can get there."
Britain officially leaves the EU on March 29, but a deal must be clinched in coming weeks to allow time for the EU and U.K. parliaments to ratify it.