British Prime Minister Theresa May was urging restive lawmakers Tuesday to "hold their nerve" and give her more time to rework a divorce agreement with the European Union.

Theresa May has promised that, if she has not brought her deal back for a so-called "meaningful vote" by Feb. 13, lawmakers will get to debate Brexit on the next day.

As Theresa May delayed a crucial vote on Britain's exit plan from the EU, European Council President Donald Tusk said on Monday that the withdrawal agreement is not up for renegotiation.