Theresa May said said the decision gave "clarity to people and businesses".
Leaders approved the strategy this morning at a meeting in Brussels, on the second day of the European Council summit.
It was a rare signal that despite Brexit a growingly hostile global environment would require stronger EU - UK included - cooperation.
It is feared that the United Kingdom may lower standards in order to reach a deal with the USA in a way that would be unacceptable to the EU.
The remaining 27 nations in the European Union have now opened the door for trade negotiations by endorsing a deal on Britain's 21-month transition to Brexit and approving guidelines created to deliver a "balanced, ambitious and wide-ranging" free trade agreement with the UK.
It clears the way for the next phase in Brexit talks. They have given a green light to talks over the bloc's future relationship with Britain for the first time. It will be summed up in a political declaration attached to the withdrawal treaty.
It offers no tariffs on goods and a close partnership on security and defence.
In exchange, the Britain will be allowed to negotiate new worldwide trade deals during the period at the same time as retaining the benefits of the single market and customs union.
The EU and Britain have agreed a "backstop" that Northern Ireland would remain part of the EU's customs union if there is no better idea - but London is deeply opposed to this. All manner of problematic issues have the potential to cause rancour and will require considerable political skill to resolve to the satisfaction of all parties - from fishing waters to Gibraltar and the Irish border to name a few.
"If we can have an agreement on the terms backstop or an alternative to the backstop before June, that's something we would very much welcome", Irish prime minister Leo Varadkar said after the summit.
EU President Donald Tusk said the bloc would now use the "positive momentum" to tackle "outstanding issues", including how to avoid border checks between the British province of Northern Ireland and EU member Ireland.
He added that leaders will also decide then how detailed the early agreement on the future relationship will be.
Theresa May has said Britain will enter negotiations on its future relationship with the European Union in "a spirit of co-operation", after leaders of the remaining 27 member states cleared the way for trade talks to begin.
British prime minister Theresa May welcomed the EU's move. I believe there's a new dynamic now in the negotiations.
"I believe we are approaching this with a spirit of co-operation, a spirit of opportunity for the future as well, and we will now be sitting down and determining those workable solutions for Northern Ireland, but also for our future security partnership and economic partnership", she said.
Following the news that the European Council had agreed a Brexit deadline of the end of 2020, FDF director general Ian Wright said: "The UK's 7,000 food and drink manufacturers will welcome the certainty today's agreement brings".
The rift between Iran and Saudi Arabia is another reason why Bin Salman is hell bent to buy multibillion-dollar arms. Mohammed Bin Salman during the meet, hailed the history of his country's relations with US.
US President Donald Trump has congratulated Vladimir Putin on his win in Sunday's presidential election in Russian Federation . John McCain released a biting statement accusing Trump of 'congratulating dictators on winning sham elections'.
Jacqueline will be as per reports, plays the female lead in the movie Race 3 , she was already part of Race 2 also though. Directed by Remo D'Souza, the film also stars Anil Kapoor , Daisy Shah, Saqib Saleem and Bobby Deol in the pivotal roles.
Earlier this month, Bolt announced he will captain a World XI at Old Trafford in a UNICEF charity game in June 2018. Athletics legend Usain Bolt has been training with Bundesliga side Borussia Dortmund in Germany.
The dollar eased against a basket of currencies on Friday as trade concerns triggered a bout of investor risk aversion. Tencent fell more than 4 percent after Naspers Ltd. revealed a plan to cut its stake in the Chinese internet giant.
Not one year later, ISIS claimed responsibility for a truck ramming that killed 86 people celebrating Bastille Day in Nice. He is one of the hero of France. "He is now fighting for his life and all our thoughts go out to him and his family".
A South Korean delegation will travel to the North Korean capital later this week to inspect the locations for the historic event. The Pentagon said the North Korean military had been notified about the schedule for the drills by the United Nations Command.
The survey reported high treatment failure and death rates of multi-drug resistant TB patients than the global level. People will usually be coughing up blood containing sputum; they'll have a high fever, night sweats and weight loss.
Maryland State Superintendent Karen Salmon has said more should be done to support and counsel troubled students. The Enterprise , a local newspaper, reports Cameron said at the time that Gaskill had "used exemplary judgment".
However, during engine start, the Pilot-in-Command observed a hydraulic (not oil) leakage from #2 engine. As far as market share is concerned, IndiGo continued to dominate in February with a 39.9% share.
It's about time the NRA's influence waned, by Leo Sandy
What we need is to expand universal background checks for gun sales and to ban the sale of semi-automatic assault style rifles. Perpetrators know these laws as well and also know those institutions would be an easy take because no one is armed.
Trump Readies a Hefty Penalty on China
Meanwhile, China's Premier Li Keqiang said yesterday that there will be no victor from any trade war between China and the United States , and that he hopes both sides can remain "calm".
Politicians throw tear gas in Kosovo's parliament
Live footage from March 21 shows MPs hastily exiting the chamber as smoke billows out, apparently from multiple tear gas bombs. The United States and 23 of the EU's 28 member states now recognize Kosovo as an independent country.
Gingrich Urges Trump to Stop Tweeting About Mueller
Congressional leaders are putting the final touches on a $1.3 trillion spending bill that will pass Congress in the coming days. Ryan said the investigation should be allowed to continue out of respect to the rule of law - and said he's "confident" Mr.
WR Allen Hurns to visit Jets on Wednesday
Quincy Enunwa, Jermaine Kearse, Robby Anderson , ArDarius Stewart and Chad Hansen are all returning for the Jets this season. In 2015, Hurns started 15 games while recording 64 receptions for 1,031 receiving yards and 10 touchdowns.
Bomb hoaxes at North Yorkshire schools
Schools in London , Humberside , Northumbria, the West Midlands and Greater Manchester , among others, all received emails. The emails are believed to originate from the USA , written mostly in English but also including some Arabic sentences.