Donald Trump and Queen Elizabeth inspect the Guard of Honour at Windsor Castle in Windsor, England. File
Trump told the Sunday Times in an interview that Britain should "walk away" from talks and refuse to pay a £39 billion ($49 billion) divorce bill if it doesn't get better terms from the EU.
The president also says Brexit party leader Nigel Farage, an outspoken advocate of leaving the EU without a deal, should be given a role in the negotiations.
He told the newspaper that Farage "is a very smart person. They won't bring him in. Think how well they would do if they did. They just haven't figured that out yet."
Britain is scheduled to leave the EU on Oct.31 unless both sides agree to an extension. Britain's position is in flux because Prime Minister Theresa May is stepping down as party leader on Friday, setting in motion a race to succeed her and become prime minister.
Trump's comments come just before he begins a state visit Monday to Britain, hosted by Queen Elizabeth II. He will meet with May on Tuesday.
Trump has also taken the unusual step of saying that Conservative Party leadership candidate Boris Johnson would make an "excellent" leader for the UK.
It is traditional for US and other world leaders not to offer choices in other country's domestic political competitions.
US Ambassador Robert "Woody" Johnson said on Sunday that Trump's support of Johnson stems from their personal relationship.
"He's known Boris Johnson for a long time and what he's commenting on is his knowledge of Boris Johnson as a person," the ambassador said.
He also said that Washington would be ready to sign a strong trade deal with Britain once it's out of the EU.
British Prime Minister Boris Johnson spoke to US President Trump on Monday, discussing Brexit, trade and economic issues, a statement from Johnson’s office said.
Politics is going round in circles. Five years ago, Nigel Farage emerged triumphant from the European parliament elections, after Ukip won the most votes and seats.
This will come as a disappointment to the US president, but his views won’t affect British politics much. Donald Trump’s endorsement of Boris Johnson won’t change the outcome of the Conservative Party leadership contest. His childish insulting of Sadiq Khan won’t stop the London mayor being re-elected next year. And his advice on the UK’s negotiating tactics is hardly going to decide whether – or how – we eventually leave the EU.
Kurdish police spokesman Ali Al Hassan said the car bomb was detonated by "remote control" near a school, "killing a member of our (police) forces".
Ten weeks of demonstrations have plunged the financial hub into crisis with images of masked black-clad protesters engulfed by tear gas during street battles with riot police stunning a city once renowned for its stability.
The ministry said another Palestinian was hospitalised in the shooting that came after the Israeli army said an attack helicopter and tank had fired at "armed suspects" along the barrier that separates Israel from Gaza.