Wolff presents a picture of a doomed administration lurching from crisis to crisis, steered by a childlike figure who responds to overstimulation with intense, reflexive outbursts.
The president may not be able to restrain himself from commenting but I can restrain myself from commenting on his comments, Wolff told the Guardian on Saturday.
At a lunchtime press conference at Camp David, the president was asked why he tweeted. In a characteristically freewheeling answer, he said: Only because I went to the best colleges or college. I went to I had a situation where I was a very excellent student, came out and made billions and billions of dollars, became one of the top business people.
Went to television and for 10 years was a tremendous success as you probably have heard. Ran for president one time and won.
In fact, in 1999 Trump mounted a first run for the White House when he sought the nomination of the Reform party.
The president continued, referring to Wolff: And then I hear this guy that does not know me doesnt know me at all by the way did not interview me for three he said he interviewed me for three hours in the White House it didnt exist, OK? Its in his imagination.
Trump called Wolff a fraud and his book a work of fiction and complained about US libel laws, which he has threatened to change.
The White House chief of staff, John Kelly, told a White House pool reporter the president tweeted to get around the filter of the media. Trump had not at all seemed angry on Friday night or Saturday, Kelly said, adding that the president had watched the Hugh Jackman movie The Greatest Showman about the hoaxer and politician PT Barnum with lawmakers and others.
Before Trumps tweets, Wolff spoke to the BBC. He said: I think one of the interesting effects of the book so far is a very clear emperor has no clothes effect.
Suddenly everywhere people are going: Oh my God, its true, he has no clothes. Thats the background to the perception and the understanding that will finally end this presidency.
The 25th amendment of the US constitution provides for the removal of a president if a majority of the cabinet and the vice-president agree. In Wolffs book, the then White House strategist Steve Bannon refers to Vice-President Mike Pence as our fallback guy. Pence stood to Trumps right at Camp David, his gaze rarely leaving the president.
Bandy Lee, an assistant clinical professor at the Yale School of Medicine, briefed a dozen members of Congress last month on Trumps behaviour. At the end of a week that began with Trump taunting North Korea over the size of his nuclear button, Lee told the Guardian the danger has become imminent.
Fifty-seven House Democrats have signed on to a bill to establish an oversight commission to determine if a president is mentally and physically fit.
We need this legislation quite apart from the Trump administration, Jamie Raskin, a Democrat from Maryland and the author of the bill, told the Guardian.
The 25th amendment was framed during the nuclear age the nuclear arsenal being a vast destructive power that is vested, as the president reminded us this week, in one person who views himself as having the power to press a button. We certainly dont want someone in that position who lacks the power of empathy.
The rising tide of questions around the presidents mental health reflects a lot of anxiety unleashed by the presidents nuclear taunts lodged at North Korea.