Another Brexit referendum will become a "plausible" way forward if there is deadlock in Parliament, Work and Pensions Secretary Amber Rudd has said.
She told ITV's Peston show while she did not personally support another vote, the case for one would grow if MPs could not agree another solution.
She said she hoped MPs would back Theresa May's deal with the EU next month but it would be "very difficult".
The PM says the UK must be ready to leave without a deal if it is rejected.
Mrs May has repeatedly ruled out holding another referendum, saying it was the government's duty to implement the result of the 2016 Brexit vote.
A Downing Street source said the government was "very clear we are 100% opposed" to another referendum.
The UK is due to leave the EU on 29 March 2019 but an agreement on the terms of its withdrawal and a declaration on future relations will only come into force if the UK and EU Parliaments approve it.
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