(SOUNDBITE) (English) EUROPEAN UNION CHIEF EXECUTIVE JEAN-CLAUDE JUNCKER SAYING: "This is the best deal possible for Britain." (SOUNDBITE) (English) EU CHIEF BREXIT NEGOTIATOR, MICHEL BARNIER, SAYING: "Now it's time for everybody to take responsibility." Stark messages from EU leaders in Brussels Sunday (November 25) as they urged the UK to back Theresa May's contentious Brexit deal.
After years of tough negotiations, the British prime minister's plan finally has the approval of all 27 EU states.
But the challenge is now in Britain where it still faces furious oppostion.
EU leaders took barely half an hour to rubber-stamp the 600-page agreement on Sunday, after last minute talks on Gibralter cleared the way.
The biggest question is now whether May's divided minority government can steer the deal through parliament, where opposition is fierce.
The agreement sees London following many EU rules to keep easy trade access.
And includes a 'backstop' which could align Northern Ireland more closely with the EU, if no other way can be found to avoid a hard border with the Republic of Ireland.
May made a direct appeal to the British public on Sunday writing an open letter to the nation, urging everyone to save Brexit.
She said the deal is in the quote "national interest": one that works for everyone, whether you voted "Leave" or "Remain".
Talk back in Brussels included four possible scenarios if parliament blocks the deal: A second referendum.
A general election to find a new British leader.
A renegotiation with the EU.
Or simply that Britain will crash out of the bloc on March 29.