Trump: 'Wacky' UK ambassador a 'very stupid guy'

President TrumpDonald John TrumpTrump administration eyes proposal to block jet engine sales to China: report Trump takes track to open Daytona 500 Brazile 'extremely dismayed' by Bloomberg record MORE early Tuesday ramped up his criticism of the British ambassador to the United States, who called Trump "inept" in leaked cables, saying Kim Darroch is “a very stupid guy” and a "pompous fool."

“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,” Trump tweeted.

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Trump also again attacked British Prime Minister Theresa MayTheresa Mary MayNo 'post-Brexit doom' indeed: Watch Britain boldly move forward Labour's loss should tell Democrats not to tack too far to the left Is Corbyn handing Brexit to Boris Johnson? MORE over Brexit, saying he told her “how to do that deal, but she went her own foolish way-was unable to get it done.”

“A disaster!” he continued. “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!”

Darroch reportedly described Trump as “incompetent” and “inept” in memos and notes sent to the United Kingdom's Foreign and Commonwealth Office. Barroch also described conflicts within the Trump administration as “knife fights” and said he doesn’t believe the White House will “ever look competent.”

Trump tweeted on Monday after the leaked cables were reported that he would “no longer deal with” Darroch.

"I do not know the Ambassador, but he is not liked or well thought of within the U.S. We will no longer deal with him,” he said.

Shortly after Trump’s tweet, an administration official said Darroch was disinvited from a Monday night dinner hosted by Treasury Secretary Steven MnuchinSteven Terner MnuchinGOP senators offering bill to cement business provision in Trump tax law On The Money: Deficit spikes 25 percent through January | Mnuchin declines to say why Trump pulled Treasury nominee who oversaw Roger Stone case | Lawmakers trade insults over Trump budget cuts Mnuchin defends Treasury regulations on GOP tax law MORE with Trump and the emir of Qatar.