The Taoiseach says a deal on Brexit is still possible within weeks.
The issue is dominating a meeting of the British Irish Council in the Isle Of Man today.
It comes as tensions are mounting between the DUP and the British Prime Minister over the future of Northern Ireland post-Brexit.
Earlier, Theresa May was accused of breaking promises over plans for the Irish border after a letter she sent to the DUP was leaked to a newspaper.
Speaking this afternoon in the Isle of Man, Leo Varadkar says a Brexit agreement is possible in the near future.
The Taoiseach said "I'm hopeful it can be done in the next few weeks. I think it's morelikely than not that well be able to include an agreement in the next few weeks before the end of the year."
"But lots of things can go wrong. Even if we can agree before the end of the year, what's agreed will have to be ratified by Westminster and by the European Parliament."