Former FBI Deputy Director Andrew McCabeAndrew George McCabeCarter Page sues over surveillance related to Russia probe McCabe defends investigation of Trump before Senate committee: We had 'many reasons' The Hill's 12:30 Report: What to know about the Pfizer vaccine announcement MORE accused President TrumpDonald TrumpBlinken holds first calls as Biden's secretary of State Senators discussing Trump censure resolution Dobbs: Republicans lost in 2020 because they 'forgot who was the true leader' MORE of acting like a mob boss and releasing a “strain of insanity,” according to a copy of his new book obtained by The Guardian.

McCabe alleges in the book that Trump and White House Counsel Don McGahn offered him protection in exchange for loyalty.

“The president and his men were trying to work me the way a criminal brigade would operate,” he wrote.

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McCabe became acting FBI director after Trump fired James ComeyJames Brien ComeyHawaii GOP official resigns over now-deleted tweet defending QAnon supporters Biden to keep Wray as FBI director Comey: 'Republican Party has to be burned to the ground' MORE. He also said in the book, "The Threat: How the FBI Protects America in the Age of Terror and Trump," that Trump directed Deputy Attorney General Rod RosensteinRod RosensteinRosenstein: Zero tolerance immigration policy 'never should have been proposed or implemented' Comey argues Trump shouldn't be prosecuted after leaving Oval Office Trump turns his ire toward Cabinet members MORE to write a memo to justify the firing.

Rosenstein and the White House both publicly deny that Rosenstein was directed to write the memo, but, according to McCabe, Rosenstein privately said that Trump ordered him to write it.

“He said it wasn’t his idea. The president had ordered him to write the memo justifying the firing,” McCabe wrote.

Then-Attorney General Jeff SessionsJefferson (Jeff) Beauregard SessionsDOJ rescinds 'zero tolerance' border policy behind family separations With another caravan heading North, a closer look at our asylum law Harris to resign from Senate seat on Monday MORE fired McCabe last year after a Justice Department inspector general report found that he lied about media disclosures. He denied the allegation.

The book is expected to go on sale this month.