If May is unsuccessful in getting her deal through Parliament, then that delay will only be until April 12, where lawmakers will then face the choice of either leaving without a deal, approving some sort of new or alternative deal, or revoking Article 50 - the mechanism that triggers Britain's departure from the bloc. They fear Britain's tangled exit will never get resolved.
If May manages to pass a deal which has already suffered two thumping defeats in the House of Commons, the European Union will let Britain remain in the bloc until May 22 to complete the formalities.
Meanwhile, French president Emmanuel Macron pushed for a harder line, to pressure the United Kingdom and avoid an emergency last-chance summit next week.
The party's interim leader, Catherine Blaiklock, resigned earlier in the week over tweets she had shared criticising Islam. Britain could still crash out without a transition, disrupting business and souring relations before the sides sit down to negotiate a trade pact and decide how to manage their politically sensitive land border in Ireland.
European Union leaders have granted a Brexit delay until May 22 should Prime Minister Theresa May convince Parliament to accept her deal, or failing that until April 12 to take an entirely new approach.
Benn says it is time to "open up this process" because Parliament has already rejected the prime minister's deal and the option of leaving without a deal.
After May left the room, and with French President Emmanuel Macron pitching a surprise ultimatum for Britain to be out, deal or no deal, by May 7 - the eve of a summit on the EU's post-Brexit future - the meeting plunged into frantic debate.
If the British parliament agrees May's divorce deal in the next few days, the delay would be until May 22 to give MPs time to ratify the text. "If it has not made a decision to do so by then, the option of a long extension will automatically become impossible".
Indian tycoon Nirav Modi arrested in London
He was arrested in London on Tuesday and will remain in custody at HM Prison Wandsworth till March 29. Nirav offered to put up £500,000 as surety but this failed to convince the judge.
Death toll from east China factory blast jumps to 44
Workers covered in blood were seen running out of the factory, said official news agency Xinhua on Thursday, citing witnesses. Thursday's blast was so powerful it triggered a small 2.2-magnitude quake and smashed the windows of nearby houses.
The Premier League might just have handed the title to Liverpool
Subscribe to Squawka's Youtube channel here . "I don't think it's a surprise that Man City have won the games they have, but rather that Liverpool have dropped points in recent weeks".
This comes after European Council President Donald Tusk spoke in February of a "special place in hell" for those who pushed for Brexit without "even a sketch of a plan".
If it has not agreed to participate in the elections, then there can be no long extension.
Britain's military said the command post under the ministry of defense was set up as a continuation of earlier planning operations, called Operation Redfold, created to minimize disruption in the event of a no-deal Brexit. And Pro-EU lawmakers will try to derail May and wrest away control of the Brexit process to steer Britain toward a close relationship with the bloc.
Another failure by British MPs to back May's deal "will guide everyone to a hard exit". Some social media users claimed this was due to a conspiracy to suppress the call for a Brexit revocation, but the truth seems far more mundane-the volume of people trying to sign or monitor the petition has in effect created what cybersecurity professionals call a "denial of service attack".
During the leaders' discussion, Tusk shuttled between the EU-27 and May to keep the British prime minister informed and have her consent for the emerging timetable.
One would be to revoke Article 50 and cancel Brexit, though that's unlikely.
Mr Speaker, may I just say your response does not raise the level [of respect], but I'll leave it there.