Despite confidently predicting a sweeping victory, Trump and his camp, Wolff writes, never thought he'd win and only sought a boost for their individual TV and political careers out of his campaign.
Some journalists have also pointed out factual inaccuracies in the book.
"I went from VERY successful businessman, to top T.V. Star.to President of the United States (on my first try). This doesn't happen - has not happened from other presidents".
In Washington, D.C., people lined up at midnight to get Michael Wolff's "Fire and Fury: Inside the Trump White House".
The impact: The Western diplomats said freezing or cutting of such a big part of the USA funding would be catastrophic for the organization, would hamper its work and might lead to negative consequences for the Palestinian refugee camps in Gaza, the West Bank, Jordan and Lebanon. "I have recordings. I have notes". "Due to a last-minute change in the release date and heightened interest, we are working with the publisher to fulfill print book orders as quickly as possible".More news: USA searches of int'l travelers' electronic devices soar in 2017
As for questions about his credibility, including about his previous reporting projects, Wolff said, "My credibility is being questioned by a man who has less credibility than perhaps anyone who has ever walked on Earth at this point". "I thought this was going to be an extraordinary story in whatever way it went".
Mr Trump's lawyers also sent a cease and desist letter to Mr Bannon, accusing him of breaking his employment agreement and defaming the President. A revealing and embarrassing excerpt of the book was published Wednesday in NY magazine.
Melania Trump, in particular, "was horrified by the prospect of victory", the book claims and "was in tears - and not of joy" when her husband eventually won, reported The Guardian. Wolff said insiders say President Trump acts "like a child".
Wolff defended himself on NBC's "Today" on Friday: "I absolutely spoke to the president". "Whether it's real or imaginative, I want to read it.it's juicy reading". It certainly wasn't off the record.
"The story that I have told seems to present this presidency in such a way that it says he can't do his job". "My window into Donald Trump is pretty significant". The book incorporates substantial information from former campaign manager Steve Bannon, including an on-the-record remark describing a Trump campaign meeting with Russian lawyers as "treasonous".
Trump and the White House slammed Wolff over his book after excerpts of it were released this week, painting an unflattering view of his administration. According to his critics, The Washington Post said, "Wolff has a penchant for stirring up an argument and pushing the facts as far as they'll go, and sometimes further than they can tolerate".