President Donald Trump pulled off a diplomatic backflip on Friday, reversing himself on trade, Brexit and his critical assessment of British PM Theresa May while insisting the US-UK relationship is "the highest level of special".
Mr Khan said the Prime Minister should not be afraid to challenge the Republican property mogul, who also provoked anger by criticising her Brexit plans and praising her rival, Boris Johnson, as having the ability to be a "great prime minister".
London Mayor Sadiq Khan, who was criticised by Trump in the Sun interview for failing to control crime and prevent militant attacks, gave his blessing for the blimp to be flown and rejected suggestions this showed a lack of respect to the USA president.
Massive protests are greeting President Trump during his two-day trip to Britain-including a 20-foot-long giant blimp depicting Trump as an angry orange baby wearing a diaper and clutching a cellphone, ready to tweet.
The Trumps had landed in the castle grounds on his official helicopter Marine One, before being taken to the courtyard in a chauffeured Range Rover, where the Queen and the Coldstream Guards were waiting.More news: Trump’s order for OPEC to reduce prices is insulting - Iranian oil minister
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"Many people are delighted", said Trump. But we record when we deal with reporters. I get along with her very nicely. "But maybe they're taking a little bit of a different route, so I don't know if that's what they voted for".
President Trump responded to the blimp during his interview with The Sun and went on to compare it with the general opinion of him.
"We are cracking down right now on the European Union because they have not treated the United States fairly on trading".
Mr Trump used the interview with the Sun to lay into Mr Khan, who criticised the American leader as "ill-informed" over a tweet following the London Bridge attack in June 2017.
The US president told Mrs May "whatever you do is OK with me" on Brexit, but urged her to "make sure we can trade together".
While tens of thousands of protesters staged demonstrations across the United Kingdom against Mr Trump's views and politics, he met the Queen at Windsor Castle as the official part of his whirlwind visit to the United Kingdom drew to a close.