THERESA MAY struck a deal to revise the terms of the U.K.’s divorce from the European Union but it’s unclear whether she has done enough to win parliament’s support.

After a chaotic day of changing plans in London, the prime minister made a last-minute decision Monday to fly to Strasbourg, France, for late talks with European Commission President Jean-Claude Juncker.

More than two hours later – at 11:40 p.m. – the weary leaders sat down for a joint press conference to announce changes they both hope will now put an end to the tortuous negotiations that have defined the U.K.’s exit from the 28-country bloc.

But it’s not yet clear the new wording will be enough for the British parliament to sign off on the plan.

“The choice is clear: it is this deal, or Brexit may not happen at all,” Juncker said.

“Let’s bring the U.K.’s withdrawal to an orderly end. We owe it to history.”

When it was her turn, May appealed to the parliament – where her own Conservative Party is bitterly divided – to support the new deal in a crunch vote yesterday local time.

“Now is the time to come together, to back this improved Brexit deal, and to deliver on the instruction of the British people,” she said.

With just 17 days left until the U.K.’s scheduled departure date, talks have been stuck on the same issue that has blocked progress for the past year: the backup plan intended to ensure there’s never any need for customs checks at the land border between Ireland and the U.K.

Pro-Brexit politicians in May’s Tory party insist that the plan – known as the backstop – threatens to trap the U.K. inside the EU’s trade regime forever, because it would be impossible for Britain to leave.

The backstop effectively keeps Britain in the EU’s customs union – and therefore unable to strike free trade deals with other countries around the world, ruining a key prize for staunch Brexit supporters.

After parliament rejected the deal in a defeat of historic proportions in January, May promised to seek changes to address these concerns.

At the heart of the changes May has secured lies three new documents intended to provide additional legal guarantees that the U.K. can’t be trapped indefinitely inside the backstop arrangement.

The status of these documents was scheduled to be scrutinized intensively during yesterday’s debate. The papers include a “unilateral declaration” setting out how the U.K. believes it can escape the backstop.

U.K. Attorney General Geoffrey Cox’s legal advice was published yesterday. He said the Brexit breakthrough Theresa May claimed Monday does not change the legal risk that the U.K. could be trapped in the Irish backstop indefinitely.

If parliament rejects the deal yesterday local time, May has promised to give the House of Commons a vote on whether to leave the EU without an agreement today.

If members of parliament choose to veto a no-deal Brexit, they will then get a vote on whether to delay the U.K.’s departure from the bloc.

(SD-Agencies)