European Union approves Brexit deal with United Kingdom

British Prime Minister Theresa May holds a press conference after announcing that a negotiated deal had been reached with the European Union. USA TODAY

LONDON — In a bittersweet landmark, European Union leaders gathered Sunday to seal an agreement on Britain's departure next year — the first time a member country will have left the 28-nation bloc.

At a summit in Brussels, the leaders endorsed a withdrawal agreement that would settle Britain's divorce bill, protect the rights of U.K. and EU citizens hit by Brexit and keep the Irish border open. They will also rubber-stamp a 26-page document laying out their aims for future relations after Britain leaves at midnight Brussels time on March 29.

British Prime Minister Theresa May hailed the deal as the start of a new chapter for Britain, but European Commission President Jean-Claude Juncker said the U.K.'s departure was a tragedy.

"It's a sad day," Juncker said as he arrived.

He told reporters that deal was "the best possible," but the summit "is neither a time of jubilation nor of celebration. It's a sad moment, and it's a tragedy."

EU chief negotiator Michel Barnier said now that the first phase was done, Britain and the EU needed to work for "an ambitious and unprecedented partnership."

Tens of thousands of protesters gathered in central London on Saturday to call for a new referendum on the United Kingdom's departure from the European Union. (Oct. 20) AP

"Now is the time for everybody to take their responsibility — everybody," he said.

Dutch Prime Minister Mark Rutte said the deal — the product of a year and a half of often grueling negotiations between Britain and the EU — was regrettable, but acceptable.

"I believe that nobody is winning. We are all losing because of the U.K. leaving," Rutte said. "But given that context, this is a balanced outcome with no political winners."

The deal must still be ratified by the European Parliament, something parliament President Antonio Tajani said was likely in January.

More dauntingly for May, it also needs approval from Britain's Parliament.

May is under intense pressure from pro-Brexit and pro-EU British lawmakers, with large numbers on both sides of the debate opposing the divorce deal and threatening to vote it down when it comes to the House of Commons next month. Brexiteers think it will leave the U.K. tied too closely to EU rules, while pro-Europeans say it will erect new barriers between Britain and the bloc — its neighbor and biggest trading partner.

May insists her deal delivers on the things that matter most to pro-Brexit voters — control of budgets, immigration policy and laws — while retaining close ties to the U.K.'s European neighbors.

British Prime Minister Theresa May sought to seal business support for her Brexit deal with the European Union on Monday, but remained on a collision course with a group of lawmakers seeking to unseat her. (Nov. 19) AP

She plans to spend the next couple of weeks selling it to politicians and the British public before Parliament's vote in December.

In a "letter to the nation" released Sunday, May said she would be "campaigning with my heart and soul to win that vote and to deliver this Brexit deal, for the good of our United Kingdom and all of our people."

"It will be a deal that is in our national interest - one that works for our whole country and all of our people, whether you voted 'Leave' or 'Remain,'" she said.

She said Britain's departure from the EU "must mark the point when we put aside the labels of 'Leave' and 'Remain' for good and we come together again as one people."

"To do that we need to get on with Brexit now by getting behind this deal."

Later, May said the U.K. Parliament will vote on the divorce deal with the European Union before Christmas.

May said Sunday’s signing-off on the agreement by the EU marks the end of one phase and the start of a “crucial national debate” on Britain’s future.