Michael Wolff, author of Fire and Fury: Inside the Trump White House, appeared on NBC's Meet the Press Sunday to discuss his book's dramatic and disputed depiction of internal dysfunction in the Trump administration. "If I left out anything, it's probably stuff that was even more damning," he told host Chuck Todd. "It's that bad."

President Trump has vehemently denied Wolff's account, labeling the book a "work of fiction" and denying Wolff ever came to the Oval Office, but Wolff on Sunday maintained his account of his writing process. "I literally kind of knocked on the door and said, 'Can I come in?' and they said, 'Okay,'" Wolff said. "And I came in, I sat on the couch, and that's the point of view I've written this," he continued. "I went into this with absolutely no agenda whatsoever. I have no particular politics when it comes to Donald Trump. This is really all about human nature."