Trump brands UK ambassador 'very stupid guy' as Theresa May gives Darroch 'full support'

Theresa May and Donald Trump are locked in a war of words (Picture: Getty)

Donald Trump today branded British ambassador Sir Kim Darroch ‘wacky’ and a ‘very stupid guy’ as the fallout from his leaked comments on the US administration continued.

The US president’s latest trademark Twitter rant came as Theresa May pledged her ‘full support’ to Sir Kim, who enraged the US president by describing his administration as "inept" in leaked advice.

Mr Trump escalated the transatlantic war of words over the controversy, first saying Mrs May made a ‘mess’ of Brexit’, then calling Sir Kim a ‘pompous fool’.

Mr Trump tweeted on Tuesday morning: “The wacky Ambassador that the U.K. foisted upon the United States is not someone we are thrilled with, a very stupid guy.

“He should speak to his country, and Prime Minister May, about their failed Brexit negotiation, and not be upset with my criticism of how badly it was handled.

“I told @theresa_may how to do that deal, but she went her own foolish way - was unable to get it done. A disaster!”

He added: “I don’t know the Ambassador but have been told he is a pompous fool. Tell him the USA now has the best Economy & Military anywhere in the World, by far and they are both only getting bigger, better and stronger... Thank you, Mr. President!”

A British government spokesman had earlier responded to the leak by saying: "We have made clear to the US how unfortunate this leak is. The selective extracts leaked do not reflect the closeness of, and the esteem in which we hold, the relationship.

"At the same time, we have also underlined the importance of ambassadors being able to provide honest, unvarnished assessments of the politics in their country.

"Sir Kim Darroch continues to have the prime minister's full support.

"The UK has a special and enduring relationship with the US based on our long history and commitment to shared values and that will continue to be the case."

In an explosive series of tweets, Mr Trump accused Mrs May of making a "mess" of Brexit.

He said his administration would no longer deal with Sir Kim, while the "good news" for the UK was that it would soon have a new prime minister.

Mr Trump tweeted: "I have been very critical about the way the UK and Prime Minister Theresa May handled Brexit."

"What a mess she and her representatives have created. I told her how it should be done, but she decided to go another way.

"I do not know the ambassador, but he is not liked or well thought of within the US. We will no longer deal with him.

"The good news for the wonderful United Kingdom is that they will soon have a new prime minister.

"While I thoroughly enjoyed the magnificent state visit last month, it was the Queen who I was most impressed with!"

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Mr Trump's outspoken attack - the most strident public criticism of a British PM by a US president in decades - will alarm and dismay Downing Street.

It comes just a month after the government rolled out the red carpet for the US president for a state visit in which he praised the enduring strength of the "special relationship".

In the Commons, there were calls for the police to investigate amid widespread anger at the diplomatic fall-out from the leak.

Sir Kim Darroch, the UK's ambassador to the US, is at the centre of a diplomatic row (Picture: PA/Getty)

Tom Tugendhat, chairman of the Commons Foreign Affairs Committee, told MPs he had written to the Metropolitan Police Commissioner Cressida Dick to "ask that a criminal investigation also be opened into the leak".

Foreign Office minister Sir Alan Duncan said police could be involved if evidence of wrongdoing over the leak is found, telling the Commons: "If evidence of criminality is found, then yes, the police could be involved."

Earlier, foreign secretary Jeremy Hunt said he did not agree with all the views expressed by Sir Kim and insisted Britain still had the "warmest" of relationships with the US.

Mr Trump said Mrs May had made a "mess" of Brexit (Picture: Reuters)

Speaking at a press conference at the Foreign Office, Mr Hunt said: "It's a personal view and there will be many people in this building who don't agree with that view and indeed I don't agree with some of the views that we saw in those letters.

"I think the US administration is highly effective and we have the warmest of relationships and a partnership based on standing up for shared values."

However, International Trade Secretary Liam Fox - on a visit to the US - was less sanguine, expressing concern about the impact on US-UK relations after Mr Trump reacted angrily to the leak.

Mr Trump and Mrs May during his UK state visit last month (Picture: AFP/Getty)

"This is such a damaging, potentially damaging, event, that I hope the full force of our internal discipline, or even the law, will come down on whoever actually carried out this particular act," he told the BBC.

The Foreign Office, which originally described the leak as "mischievous", launched a formal leak inquiry on Sunday.

In the memos, obtained by The Mail on Sunday, Sir Kim suggested that in order to communicate with the president "you need to make your points simple, even blunt".

In a scathing assessment of the White House, he said: "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."

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