Donald Trump says he’s a ‘very stable genius’

US PRESIDENT Donald Trump has lashed out at critics questioning his mental stability in a series of early morning tweets - declaring himself a "genius."

Mr Trump was responding to suggestions in Michael Wolff's explosive new book Fire and Fury: Inside the Trump White House, which questions his mental stability and whether he is fit for office.

"Now that Russian collusion, after one year of intense study, has proven to be a total hoax on the American public, the Democrats and their lapdogs, the Fake News Mainstream Media, are taking out the old Ronald Reagan playbook and screaming mental stability and intelligence," he wrote at 7:19am (11:19pm AEDT).

"Actually, throughout my life, my two greatest assets have been mental stability and being, like, really smart. Crooked Hillary Clinton also played these cards very hard and, as everyone knows, went down in flames. I went from VERY successful businessman, to top TV Star to President of the United States (on my first try). I think that would qualify as not smart, but genius ... and a very stable genius at that!"

Later, after meeting with Republicans at Camp David, Mr Trump doubled down on the self-praise when asked why he felt the need to tweet about his intelligence.

"I went to the best colleges, or college, I had a situation where I was a very excellent student. Came out and made billions and billions of dollars and became one of the top business people. I went into television and for 10 years was a tremendous success, as you probably have heard. I ran for president one time and won and I then I hear this guy, who doesn't know me, says he interviewed me for three hours in the White House but that didn't happen," he said. "He is a fraud ... I consider (the book) a work of fiction."

Mr Trump also took a swipe at Steve Bannon, who was quoted extensively in the book.

"I did a quick interview with (Michael Wolff) a long time ago having to do with an article but I don't know this man. I guess Sloppy Steve brought him into the White House quite a bit, that's why Sloppy Steve is looking for a job," he said

In the rapid-fire tweets, he also praised news that the country's African-American unemployment rate had fallen to its lowest rate on record, and also criticised US ABC reporter Brian Ross, who returned to the network after a month-long suspension for an error in a report on Trump's now disgraced former national security adviser, Michael Flynn.

"The African-American unemployment rate fell to 6.8 per cent, the lowest rate in 45 years. I am so happy about this News! And, in the Washington Post (of all places), headline states, 'Trumps first year jobs numbers were very, very good.'" the President tweeted.

He then slammed Ross, who will now work as an investigative correspondent working on long-term projects. The reporter's suspension ended this week.

"Brian Ross, the reporter who made a fraudulent live newscast about me that drove the Stock Market down 350 points (billions of dollars), was suspended for a month but is now back at ABC NEWS in a lower capacity. He is no longer allowed to report on Trump. Should have been fired!" Mr Trump tweeted.


Author Michael Wolff says his highly critical book of Mr Trump's first year as US President

are likely to bring an end to his time in the White House.

Wolff has told BBC radio that his conclusion in Fire and Fury: Inside the Trump White House that Mr Trump is not fit to do the job is becoming a widespread view.

"I think one of the interesting effects of the book so far is a very clear emperor-has-no-clothes effect," Wolff said.

"The story that I have told seems to present this presidency in such a way that it says he can't do his job," Wolff said. "Suddenly everywhere people are going 'oh my God, it's true, he has no clothes'. That's the background to the perception and the understanding that will finally end ... this presidency."

Mr Trump has dismissed the book as full of lies.

It depicts a chaotic White House, a president who was ill-prepared to win the office in 2016, and Trump aides who scorned his abilities.