"I’ve had to put up with the Fake News from the first day I announced that I would be running for President," President Donald Trump wrote on Twitter. | Carolyn Kaster/AP Photo Trump: 'Now I have to put up with a Fake Book'

President Donald Trump on Sunday continued to express his dismay with a blockbuster new book that portrays a commander in chief who is mentally unstable.

"I’ve had to put up with the Fake News from the first day I announced that I would be running for President," Trump wrote on Twitter. "Now I have to put up with a Fake Book, written by a totally discredited author."


The White House pushed back on Michael Wolff's "Fire and Fury: Inside the Trump White House" throughout the past week as excerpts trickled out depicting behind-the-scenes details about the president and his staff. Some journalists have also pushed backed on Wolff, saying his past — along with factual errors in the book — require a very skeptical reading on his reporting and analysis.

Stephen Miller, the president's senior policy adviser, sparked a heated exchange with CNN anchor Jake Tapper on Sunday, as Miller repeatedly torched the book.

"The book is best understood as a work of very poorly written fiction. ... The author is a garbage author of a garbage book," Miller said on CNN's "State of the Union."

Trump later blasted Tapper, calling him a "CNN flunky."

"Jake Tapper of Fake News CNN just got destroyed in his interview with Stephen Miller of the Trump Administration," the president tweeted.

Tapper and Miller engaged in a fierce argument Sunday morning, swapping insults and accusations. When he returned from commercial after the interview, Tapper said: "Welcome back to the 'State of the Union' — and planet Earth."

The president has sought to isolate himself from questions about his mental state by comparing the attacks to questions raised about then-President Ronald Reagan during the 1980s.

Years later, Reagan died of complications related to Alzheimer's disease, and there are questions as to whether Reagan's performance was impacted by early symptoms of the disease, which was not publicly diagnosed until the 1990s. Four of the 40th president's doctors disputed such claims in 1997.