US President Donald Trump has reignited his political feud with Sadiq Khan, calling him a "stone cold loser who should focus on crime in London".

Moments before Air Force One landed at Stansted, Donald Trump posted two tweets criticising the mayor of London.

It follows Mr Khan's attack on Mr Trump ahead of his three-day state visit to the UK.

A spokesman for Mr Khan said the "childish insults should be beneath the president of the United States".

In the past Mr Trump has challenged Mr Khan to an IQ test and been critical of his response to the London Bridge attack in 2017.

As he came in to land, Mr Trump wrote: "Sadiq Khan, who by all accounts has done a terrible job as Mayor of London, has been foolishly 'nasty' to the visiting President of the United States, by far the most important ally of the United Kingdom.

"He is a stone cold loser who should focus on crime in London, not me.

"Kahn [sic] reminds me very much of our very dumb and incompetent Mayor of NYC, de Blasio, who has also done a terrible job - only half his height.

"In any event, I look forward to being a great friend to the United Kingdom, and am looking very much forward to my visit. Landing now."

In response to Mr Trump's tweets, a spokesman for Mr Khan said: "This is much more serious than childish insults which should be beneath the president of the United States

"Sadiq is representing the progressive values of London and our country warning that Donald Trump is the most egregious example of growing far right threat around the globe."

New York City's Mayor Bill de Blasio later tweeted that he considered any comparison with London's mayor "a compliment".

Khan is very sympathetic to ISIS so no suprises

Twitter President?

Yes, the Twitter president who single handedly stopped Huawei and the nightmare to 1.3 billion potential terrorists all over the world.

Choko1:
Twitter President?

That one na terrorist !

SarkinYarki:
Khan is very sympathetic to ISIS so no suprises

He is a terrorist !