Former Trump campaign adviser Roger Stone says he’s working on a book about President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE’s removal from office, telling Vanity Fair on Wednesday that he’s “writing it as we go along.”

The book, titled “The Unmaking of Trump,” was inspired by the ongoing probe of special counsel Robert Mueller, who is investigating possible collusion between the Trump campaign and Russia.

“It’s painfully obvious Mueller will bring charges. The theory is Mueller will indict him on some process-related matter,” Stone said.

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“The only people who don’t seem to know it are Ty Cobb, [John] Dowd and the president,” Stone added, referring to the White House lawyer and Trump’s personal lawyer.

Stone said he believes Trump has surrounded himself with disloyal Cabinet members, which increases his chances of not completing his term. He specifically called out United Nations Ambassador Nikki Haley Nimrata (Nikki) Haley'The soul' versus 'law and order' Author Ryan Girdusky: RNC worked best when highlighting 'regular people' as opposed to 'standard Republicans' GOP lobbyists pleasantly surprised by Republican convention MORE, who on Sunday said the women accusing Trump of sexual misconduct “should be heard," reportedly infuriating the president.

“Nikki Haley stuck a knife in his back,” Stone said, adding that he thinks most of Trump’s Cabinet would vote to remove him from office under the 25th Amendment.

Four people have been indicted or pleaded guilty so far in the special counsel probe, including Trump's former national security adviser Michael Flynn and former Trump campaign chairman Paul Manafort.

The account would be part of a multi-book deal Stone has with Skyhorse Publishing, Vanity Fair reported. The company already published Stone's "The Making of the President."

“I hope it’s a book I don’t have to publish,” Stone said of his newest project. “I just don’t think Trump is being told the truth about how bad things are.”

Stone has previously called on Trump to appoint a special prosecutor to investigate Hillary Clinton Hillary Diane Rodham ClintonButtigieg stands in as Pence for Harris's debate practice Senate GOP sees early Supreme Court vote as political booster shot Poll: 51 percent of voters want to abolish the electoral college MORE and her role in the controversial sale of Uranium One. Doing so would impede Mueller’s investigation into Trump, since he was FBI director at the time of the sale, Stone argued.