United States President Donald Trump, in a public defence of his histrionics, on Saturday, went on a Twitter spree, branding himself as a "very stable genius."
This comes as Michael Wolff's book 'Fire and Fury: Inside the Trump White House' included depictions which paint Trump as uninformed, at times an erratic and a childish president.
"Actually," the president said, "throughout my life, my two greatest assets have been mental stability and being, like, really smart."
"I think that would qualify as not smart, but genius....and a very stable genius at that!" he said.
The president also touted his stunning victory in the 2016 presidential election and his career in television and business.
"I went from VERY successful businessman, to top T.V. Star..... ....to President of the United States (on my first try),"Trump wrote.
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Press secretary Sarah Huckabee Sanders was asked about Trump's fitness to serve at press briefings two days in a row this week, the Hill reported.
Hitting back at the questions, Sanders on "Fox & Friends, "said, what "is really mentally unstable is people that don't see the positive impact that this president is having on the country."
"It's absolutely outrageous to make these types of accusations and it's simply untrue, and it's sad that people are going and making these desperate attempts to attack the president," she added.
The president had, earlier, purported that he gave Wolff "zero access" to the White House for the book. Wolff, hit back at the president, by saying that his credibility was being questioned by a man who has "less credibility than anyone who walks on Earth." The author also scoffed at Trump's credibility.
The White House, however, said that Trump never sat down with Wolff.
Trump's lawyers had tried to block publication of the book, however, the book has now gone on sale.