A no-deal Brexit would be a failure that both the British and Irish governments would be responsible for, Boris Johnson has said.
The prime minister is in Dublin for his first face-to-face meeting with Taoiseach (Irish PM) Leo Varadkar since he entered Downing Street in July.
He said he believed a deal was still possible by the EU summit in October.
However Mr Varadkar said there was no such thing as a clean break between the UK and the EU.
Mr Johnson has ruled out asking the EU to delay the Brexit deadline of 31 October - but the Irish government said it would support another extension.