Britain's Brexit Secretary David Davis has said a so-called "backstop proposal" on how to avoid a hard border on the island of Ireland is still being discussed.
His comments come amid increasing speculation of a row between Prime Minister Theresa May and her pro-Brexit ministers over the UK proposal on how to prevent a hard border in the event of a no-deal Brexit.
There has been a suggestion that the "backstop" could be published tomorrow, but a spokesperson for Mrs May would only say the proposals will be issued 'shortly'.
Mr Davis made his comments after a speech in London this afternoon on the future security relationship with the European Union.
He said Brexit would mean a new relationship with the EU on security but should not ignore the relationship which had existed in the past.
Mr Davis said an upcoming white paper would set out at length the close trading ties which the UK wants with the EU and would tackle the 'heavily propagated myth' that the UK does not know what it wants.
"The detail of this is being discussed at the moment, it's been through one cabinet committee and it's going to another one, and it would be improper of me to pre-empt the negotiation there, but I suspect it will be fairly decisive tomorrow," he said.
Mr Davis added that he would be holding talks with the EU's chief negotiator Michel Barnier next week.
Meanwhile, Downing Street has said it does not expect proposals for a "backstop" arrangement to keep the border on the island of Ireland open after Brexit will be needed.
Mrs May's official spokesman said: "The backstop is there for if we have reached an agreement but extra time was required to implement it.
"But as the PM and others have said, we do not expect that to be the case."
Asked if Brexit Secretary David Davis had threatened to resign over the issue, he replied: "Not that I'm aware of, no."
May refuses to confirm Brexit proposals date
Earlier, British Prime Minister Theresa May refused to say whether or not the British government would publish its Brexit policy proposals before the end of this month.
Publication of the White Paper on Brexit had been expected before a crucial EU Summit on 28 and 29 June, but there is increasing speculation that it will not happen this month.
During prime minister's questions in the House of Commons, Mrs May refused to say when the paper would be published, instead saying that she and Mr Davis wanted to publish a paper that goes beyond the papers and speeches published so far.
Mrs May was also asked about current proposals in relation to the Irish border and the customs union.
She said her government was looking at two options for a customs model to ensure there was no hard border on the island of Ireland, adding that was why alternative proposals were being put forward by her government to the EU in relation to the issue.
