News, views and top stories in your inbox. Don't miss our must-read newsletter Sign up Thank you for subscribing We have more newsletters Show me See our privacy notice Invalid Email

Donald Trump has slammed Tony Blair for doing a "terrible job" by invading Iraq and said he should have stood up to George Bush.

The billionaire presidential hopeful also spoke about Princess Diana and why he feels he is part British.

In an interview today, Trump warned the Chilcot Inquiry into the 2003 conflict - which will finally be published on July 6 - will be a "disaster" for Labour's former Prime Minister.

He told Piers Morgan on ITV's Good Morning Britain that in future, UK leaders should put the needs of their own country before that of America.

"I don't see it as war crimes," he said. "I just think he goes down as somebody who did a terrible job.

"Bush got us into it, that's a terrible terrible thing that happened."

Asked if he would respect a PM who ignored America's wishes, Mr Trump said: "Yeah, much more. It should be for the people, it shouldn't be a word about the relationship.

Read more:

(Image: STEFAN ROUSSEAU/AFP/Getty Images)

"I'm surprised somebody would see the Bush relationship as being that important.

"Tony Blair made a mistake. You can't just go in haphazardly. You folks got involved in that mess just as we did and now look at it."

Trump, who has put forward a plan to ban Muslim's from the US, also criticised Lord Alan Sugar.

He described the non-affiliated peer as "a low-level small-timer" and said he could write a bigger cheque than him.

Yesterday on the programme, Trump launched an attack on "nasty" Sadiq Khan and admitted he may not have a "good relationship" with David Cameron after he vowed to ban Muslims from the US.

Video Loading Video Unavailable Click to play Tap to play The video will start in 8 Cancel Play now

The presidential hopeful hit back after London's first Muslim mayor warned his "ignorant" views on religion will make the world less safe if he becomes President.

David Cameron also said Mr Trump's plan for a temporary border ban was "stupid, divisive and wrong".

Mr Trump said he was offended by Mr Khan's "ignorant" remarks and even challenged him to an IQ test.

"He doesn't know me, hasn't met me, doesn't know what I'm on about," he told ITV's Good Morning Britain host.

Read more:

"I think they're very rude statements and frankly tell him I will remember those statements. They're very nasty statements.

"I think it's ignorant for him to say that."

He added: "We have a tremendous problem with radical Islamic terror. Look at it worldwide.

"The world is blowing up and it's not people from Sweden that's doing the damage, OK?"

A spokesman for London's first Muslim mayor hit back within hours, saying: "Donald Trump's views are ignorant, divisive and dangerous - it's the politics of fear at its worst and will be rejected at the ballot box just as it was in London.

"Sadiq has spent his whole life fighting extremism, but Trump's remarks make that fight much harder for us all - it plays straight into the extremists' hands and makes both our countries less safe."