President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance 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 May Theresa Mary MayAre US-Japan relations on the rocks? Trump insulted UK's May, called Germany's Merkel 'stupid' in calls: report Bolton says Boris Johnson is 'playing Trump like a fiddle' 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!”

...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! 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... — Donald J. Trump (@realDonaldTrump) July 9, 2019

....and they are both only getting bigger, better and stronger.....Thank you, Mr. President! — Donald J. Trump (@realDonaldTrump) July 9, 2019

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 Mnuchin Steven Terner MnuchinOn The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline Vulnerable Democrats tell Pelosi COVID-19 compromise 'essential' Pelosi asks panels to draft new COVID-19 relief measure MORE with Trump and the emir of Qatar.