WASHINGTON (Reuters) - Former Trump adviser Steve Bannon’s comment that a meeting between Trump campaign officials and a group of Russians was “treasonous” focused on President Donald Trump’s son and not his former campaign manager, as Bannon now maintains, the author of a book containing the remark said on Monday.

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In the book, “Fire and Fury: Inside the Trump White House,” Bannon labeled the June 2016 meeting at Trump Tower, which Donald Trump Jr. attended, as “treasonous” and “unpatriotic.” A British publicist who helped arrange the meeting had said one of the Russians would have damaging information on Trump’s presidential opponent, Hillary Clinton.

On Sunday, Bannon retreated from those comments, saying Trump Jr. was a patriot and that he had labeled the actions of Trump’s former campaign manager, Paul Manafort, as treasonous, not those of the president’s son.

The book’s author, Michael Wolff, disputed Bannon’s account.

“Steve was incredibly helpful on this book, and his insights are penetrating, and I don’t feel great about putting him in what seems obviously a difficult position. But he was talking about Don Jr.,” Wolff told MSNBC. “He was not talking about Paul Manafort.”

Trump and other White House officials have attacked Bannon and the book, which they have said is riddled with lies.

The book, which has dominated U.S. news media since excerpts began to surface on Wednesday, depicts a chaotic White House led by a man who is mentally unstable and unfit for the job.

“I don’t believe there’s any way back for Mr. Bannon at this point,” White House spokesman Hogan Gidley told reporters on Air Force One on Monday. “When you go after somebody’s family in the manner in which he did ... it is repugnant, it is grotesque.”

A lawyer for Trump, Charles Harder, last week threatened to block publication of the book and demanded an apology and retraction from its publisher, Henry Holt & Co.

Elizabeth McNamara, a lawyer for Macmillan, the publisher’s parent company, fired back in a letter to Harder on Monday.

“My clients do not intend to cease publication, no such retraction will occur and no apology is warranted,” she said.

U.S. intelligence agencies have concluded that Russia interfered in the 2106 presidential election to try to help Trump win. Russia has denied any meddling, and Trump has said there was no collusion.