Theresa May is stubbornly sticking to her Brexit A plan as she fights for her political survival.
The Prime Minister has continued his efforts to convince eurosceptic Conservative MPs to support his agreement.
But she faces intense pressure from her own party to set a timetable for her departure first.
The prime minister has today convened leading Brexite experts, including Boris Johnson and Jacob Rees-Mogg, to a clash at his official retreat.
They told her that in order to win her contract, she had to clearly define her starting plan for No. 10 in order to ensure that the next stage of Brexit negotiations would take place under another leader.
But a source in the checker room told the Mirror that Ms. May had refused to be drawn and offered them "no concessions" to gain her approval.
Over the weekend, dramatic news reports of an impending coup d'etat in the Cabinet, the remaining ministers are supposed to tell him to leave.
But two high-ranking ministers, David Lidington and Michael Gove, who were named as interim leaders, rejected the idea today.
Ms. May will face her mutinous cabinet tomorrow morning to agree on the most perilous way of her presidency.
And she should face new calls to quit as she informs MPs of the humiliating summit in Brussels last week.
A senior member of No10 admitted to the Mirror that Ms. May's situation was "very precarious".
They added, "There is a lot of anger and we have a very narrow window to try to move forward."
At the Checkers talks, Ms. May instead threatened members, including former Conservative leader Iain Duncan Smith and former secretary of Brexit David Davis, with a milder Brexit, unless & ### They do not conform. "It was my return or a milder Brexit," said the source.
Downing Street warned Conservative MPs that they could not even be facing Brexit, in order to convince them to stay in the ranks.
The EU has given the UK until April 12 to decide the way forward to break the current stalemate.
A multi-party group of deputies will today try to control the Brexit process from the government, with a series of "indicative votes" on the various options that will take place on Wednesday.
Conservative MP Sir Oliver Letwin, who heads the movement, said he thought that enough MPs would support their plans, although it is unclear whether the government would give MPs a free vote.
But Brexit Secretary Steve Barclay has warned that the country may be facing general elections following the "constitutional collision".
He said: "The risk of a general election is increasing because Parliament is possibly asking the executive to do something that goes against what it was elected for."
Downing Street has not yet decided whether it would reduce Ms. May's vote for the third time as party whips flocked.
A spokesman for Group 10 said: "The Prime Minister and a number of ministers met at Checkers for lengthy talks with high-level colleagues on the realization of Brexit.
"Meeting participants discussed a range of issues, including whether there is sufficient support in the Commons to bring a meaningful vote this week."
Westminster was shaken by reports that eleven cabinet ministers wanted the Prime Minister to leave room for someone else, with Mr. Lidington lining up to temporarily take over.
Other reports suggest that ministers plan to install Mr. Gove as interim leader.
But Mr. Lidington said, "I do not think I want to take the reins … Working closely with the Prime Minister allows you to heal completely from any persistent ambition to want to do this job."
Mr. Gove added, "This is not the time to change ship captain, I think what we need to do, is chart the course."
Philip Hammond admitted that not everything was going well in the Conservative party, but accused deputies who were trying to overthrow Ms. May to be "indulgent".
The Chancellor became the oldest minister to suggest that the option of a second referendum was on the table, saying that it was a "perfectly coherent proposal" which deserves to be examined "alongside others.
An online petition calling on the government to cancel Brexit has garnered five million signatures just after hundreds of thousands of people marched through central London to demand a so-called popular vote.
Jeremy Corbyn was pressured by MPs Remainers for not attending the march and campaigning in local elections in Morecambe, Lancashire.
Shadow Brexit Secretary Keir Starmer said Labor could oppose an instant general election by promising to hold a public vote on any Brexit deal.
He said the party was now clear that any agreement should be put to a vote of confirmation.