New book about Trump flying off local shelves

"Suddenly everywhere people are going, 'Oh my God, it's true, he has no clothes'".

Journalist Wolff, no stranger to controversy, quotes several key Trump aides expressing doubt about Trump's ability to lead the world's largest economy and military hegemon.

In an interview with BBC Radio 4, Blair said the book's allegations are entirely false.

"Now Sloppy Steve has been dumped like a dog by almost everyone", Trump continued in his tweet. "He has been relentless in his advocacy for his father and the agenda that has helped turn our country around".

Trump reportedly displayed more troubling behavior, such as attempting to "barricade himself" in his own bedroom. Wolff said insiders say President Trump acts "like a child".

"So it becomes from day one, the crisis of the presidency: you can't tell him anything".

Wolff claims Mr Trump's former ally and chief strategist Steve Bannon questioned his fitness for office.

Mr Bannon was sacked by Mr Trump in August.

"Fire and Fury" - which is available digitally - was released four days earlier than originally planned after excerpts of the book prompted the president's lawyers to send a cease and desist letter to the publisher.

"I think one of the interesting effects of the book so far is a very clear emperor-has-no-clothes effect. That's also why the American people chose him".

Some people have expressed concerns the book is propaganda meant to slander the president, Phillips said, but he expects it to be one of their best sellers.

The book includes a number of claims about the President Trump's administration, from the campaign to the election to his family and Vice President Mike Pence.

The new fissure in an already fractious Republican Party cast doubt on Mr Bannon's hopes of fomenting a movement centred on "Trumpism without Trump". "Too bad!" Trump tweeted.

Mr Wolff said that White House staff described the president as childlike because "he has the need for immediate gratification".

"The agenda is Trump, the drive to win is Trump, the populist campaign is all Donald Trump", Stone said. Colbert joked. "I agree with Steve Bannon?"

However, it's not just the "fake news" and Michael Wolff who have raised concerns about Trump's mental health recently.

Wolff has said that the White House's response to his reporting simply proves him correct.