A Downing Street spokesperson said:
The Prime Minister spoke to the Taoiseach this morning to take stock of the progress being made in the negotiations, including on the Northern Ireland backstop. In a constructive conversation, the Prime Minister and the Taoiseach discussed the remaining issues.
They agreed that the intention was that the backstop should only be a temporary arrangement and that the best solution to the Northern Ireland border would be found by agreeing a future relationship between the UK and the EU. In order to ensure that the backstop, if ever needed, would be temporary, the Prime Minister said that there would need to be a mechanism through which the backstop could be brought to an end.
She affirmed the UK’s commitment to the Belfast Good Friday Agreement and to avoiding a hard border between Northern Ireland and Ireland. The Prime Minister and the Taoiseach agreed that discussions should continue.