Donald Trump has been accused of disrespecting the UK and the Prime Minister after a Twitter tirade about her "foolish" leadership.
The US President dramatically stepped up the war of words following the leak of sensitive diplomatic messages from the UK's ambassador to Washington painting a critical picture of the Trump White House.
Mr Trump called ambassador Sir Kim Darroch a "pompous fool" and a "very stupid guy" who had been foisted on the US.
In an extraordinary onslaught against an ally, Mr Trump also used a Twitter post to attack Theresa May over Brexit, accusing her of ignoring his advice and "going her own foolish way".
Foreign Secretary Jeremy Hunt shot back, using Mr Trump's favoured social media platform to accuse the president of being "disrespectful and wrong".
The Tory leadership hopeful said he would keep Sir Kim Darroch in post if he became prime minister.