The UK and the EU have agreed a provisional deal on the border and other issues that will allow work to move on to the second stage of Brexit negotiations.
Here are some of the key quotes from this morning.
European Commission President Jean-Claude Juncker
''I believe we have made the breakthrough we needed. Today's result is, of course, a compromise.''
This was a difficult negotiation for the EU and the UK - @JunckerEU #Brexit pic.twitter.com/7RdBdMwHbo
— RTÉ News (@rtenews) December 8, 2017
British Prime Minister Theresa May
''In Northern Ireland, we will guarantee there will be no hard border.''
Committed that there should be no barriers North-South or East-West -
— RTÉ News (@rtenews) December 8, 2017
@theresa_may #Brexit pic.twitter.com/GmTDyq6ZDm
Taoiseach Leo Varadkar
"Today is a very significant day for everyone on the island of Ireland, for our neighbouring island and for all our fellow members of the European Union."
We've reached a satisfactory conclusion on the issues related to Ireland @campaignforleo #Brexit pic.twitter.com/keLSep5e2D
— RTÉ News (@rtenews) December 8, 2017
Tánaiste Simon Coveney
"There is no scenario now in the context of Brexit that will result in a hard border.''
'There is no scenario now in the context of Brexit that will result in a hard border' @simoncoveney pic.twitter.com/kthaxzE8Ab
— RTÉ News (@rtenews) December 8, 2017
European Council President Donald Tusk
''Breaking up is hard, but breaking up and building new relations is much harder.''
Breaking up is hard, but breaking up and building new relations is much harder - @eucopresident pic.twitter.com/icfoWfLazN
— RTÉ News (@rtenews) December 8, 2017
Sinn Féin Deputy Leader Mary Lou McDonald
"Theresa May and the British government have repeatedly very, very clearly that they - and by 'they' they mean us in the North - will leave the customs union and the single market and that presents for us a real and present danger that is highly problematic."
Mary Lou McDonald expresses concerns about the customs union and single market #Brexit pic.twitter.com/D8H9KM0OHE
— RTÉ News (@rtenews) December 8, 2017