Trump: ‘We won’t deal with UK ambassador’ after leaked emails
In withering comments on Twitter, Mr Trump also lashed out at Theresa May, saying it was “good news” that Britain would soon have a new prime minister.
Sir Kim, in emails leaked on Sunday, described Mr Trump’s administration as dysfunctional and inept.
Mrs May said she had “full faith” in Sir Kim but did not agree with him.
Her spokesman had described the leak as “absolutely unacceptable”, and said the prime minister’s office had made contact with the White House.
Mr Trump had already responded to the leaked emails by saying “we’re not big fans of that man and he has not served the UK well”.
In Monday’s series of tweets he said Sir Kim was “not liked or well thought of within the US”.
Apparently angered by Mrs May’s support for the ambassador, he again lashed out at her handling of Brexit, describing it as “a mess”.
Mrs May stepped down after failing to have a Brexit deal approved by parliament and the governing Conservative Party is choosing between two remaining candidates – Boris Johnson and Jeremy Hunt – to replace her.