Rupert Murdoch has become a 'frothing-at-the-mouth' enemy of Donald Trump and often wishes for his death, new Michael Wolff book claims

• Rupert Murdoch has become a "frothing-at-the-mouth" enemy of Donald Trump, according to a new book.
• The Guardian obtained a copy of Michael Wolff's "The Fall: The End of Fox News and the Murdoch Dynasty"

The billionaire media mogul Rupert Murdoch, who owns Fox News and The Wall Street Journal, has developed such a deep animosity toward Donald Trump that he often wishes death upon him, according to a new book.

Author Michael Wolff wrote in "The Fall: The End of Fox News and the Murdoch Dynasty" that Murdoch has in recent times become a "frothing-at-the-mouth" enemy of Trump, per The Guardian's reporting on it.

The Guardian obtained a copy of the book, which will be published in the US next Tuesday.

Murdoch's empire once gave Trump its informal backing, with his outlets — Fox News, the Journal, and the New York Post — defending and giving the former president a platform.

However, a public rift ensued after Fox News projected President Joe Biden's 2020 victory in Arizona ahead of other outlets.

Over time, Murdoch's outlets streamlined their coverage of Trump and became increasingly critical of him.

According to Wolff, Murdoch's relatively composed attitude toward Trump during his early presidency, when he was able to dismiss the president "merely as a 'fucking idiot,'" has now transformed into a "churning stew of rage and recrimination."

According to Wolff's book, Murdoch's anger has now escalated to the point where he has become fixated on the former president's demise.

Trump's death is increasingly "a Murdoch theme," Wolff wrote, per The Guardian.

Wolff claims that Murdoch has made statements like: "'We would all be better off …?' 'This would all be solved if...,' 'How could he still be alive, how could he?' 'Have you seen him? Have you seen what he looks like? What he eats?'"

Wolff's reporting on Murdoch and Trump has faced criticism in the past, with PolitiFact noting that his bestseller "Fire and Fury: Inside the Trump White House" contained inaccuracies and issues relating to sourcing and transparency.

The Guardian reported that Wolff describes his source material as "conversations specifically for this book, and other conversations that have taken place over many years … scenes and events that I have personally witnessed or that I have recreated with the help of participants in them."

CNN Business said that while some of the claims in Wolff's latest book will prove to be accurate, a "quick glance" reveals a number of sloppy mistakes, spelling mistakes, and questionable fact-checking processes.

News Corp, which is owned by Murdoch, did not immediately respond to Insider's request for comment.