Prime Minister Theresa May has promised to give MPs a vote on extending Brexit negotiations or withdrawing from the EU without a deal if her plan is rejected next month.
In a dramatic statement to the House of Commons, Mrs May confirmed that she will put her Withdrawal Agreement - including whatever additional assurances she has secured from Brussels - to a "meaningful vote" by March 12.
If that fails, MPs will be offered two separate votes the following day - one on a no-deal Brexit, and the other on requesting an extension to the two-year Article 50 negotiation process to delay EU withdrawal beyond March 29.
The sequence of votes will be proposed in an amendable motion tabled by the Prime Minister for debate and vote in the Commons on Wednesday.
To uproar in the Commons, Mrs May told MPs: "They are commitments I am making as Prime Minister and I will stick by them, as I have previous commitments to make statements and table amendable motions by specific dates."