"Retribution," by Jonathan Karl: Hunter Biden was furious at Obama

Behind the scenes: "I almost jumped up on the stage and said, 'Don't ever f--king do that to the president of the United States again — ever," Hunter Biden, still furious months later, told Karl in one of their extensive interviews.

• The younger Biden insisted his dad was simply taking some time to acknowledge the crowd. "I knew that that was going to be a meme," Hunter recalled. "That really, really, really, really pissed me off."

"Retribution" — deeply reported by Karl, ABC's chief Washington correspondent and a co-anchor of "This Week"— shows why Trump's second term "is more radical and consequential than the first — changing America in ways that will far outlive the Trump presidency," a book preview says.

• Karl, who has written three previous bestsellers on Trump, told me that "Retribution" — now commonly used in news stories, was his plan for the title from the day that Trump was reelected.

Go deeper: More on the book ... Excerpt from The Atlantic, "Steve Bannon and the Murderers and Hitmen Who Became His 'Besties': What the man who has Trump's ear learned in prison."