President Donald Trump has attempted to shrug off a highly disparaging assessment of him by Britain's ambassador to the United States.
The top diplomat Kim Darroch described Trump's administration as "dysfunctional", "clumsy" and "inept", the Mail on Sunday newspaper reported, citing a series of confidential memos.
The leaked report drew ire from Trump, who said the British ambassador, "did not serve the UK well."
Speaking to reporters as he departed Morristown, New Jersey, Trump said "We've had our little ins and outs with a couple of countries and I'd say that the UK and the ambassador has not served the UK well, I can tell you that."
"We are not big fans of that man and he has not served the UK well so I can understand and I can say things about him but I won't bother," Trump said, referring to Darroch.
In memos to the British government which date from 2017 to the present, Darroch said Trump "radiates insecurity" and advises officials in London that to deal with him effectively "you need to make your points simple, even blunt".
"We don't really believe this Administration is going to become substantially more normal; less dysfunctional; less unpredictable; less faction riven; less diplomatically clumsy and inept," Darroch wrote in one, according to the newspaper.
But he also warned British officials not to write Trump off, saying there was a "credible path" to him winning a second term in office. He said Trump may "emerge from the flames, battered but intact, like (Arnold) Schwarzenegger in the final scenes of The Terminator."
A spokesman for the Foreign Office said the public would expect ambassadors "to provide ministers with an honest, unvarnished assessment of the politics in their country".
"Their views are not necessarily the views of ministers or indeed the government. But we pay them to be candid," he said.
"Our team in Washington have strong relations with the White House and no doubt these will withstand such mischievous behaviour."
The Foreign Office later said a formal investigation into the leak would take place.
The Ambassador's comments have also drawn criticism from conservatives in Britain.
Among them, outspoken eurosceptic and Trump supporter Nigel Farage called for Darroch to be sacked.
"Kim Darroch is totally unsuitable for the job and the sooner he is gone the better," Farage tweeted.