of the trump white house. the white house is pushing back. but there are no signs the fallout from the bookleting up. >> some of the most explosive quotes from "fire and fury" are attributed to steve bannon, president trump's former chief strategist. now bannon says he regrets not responding sooner to what's in the book. he says he still believes this the president and his agenda, and that he never bad-mouthed donald trump jr. as the author suggests. >> when the book came out friday, this despite legal threats from the president's personal attorneys, the president responded furiously on twitter calling it a fake book written by a totally discredited author. >> all of, this though, may be too little too late. we're told president trump is drawing a line in the sand, calling allies and friends, making it clear they must choose between him and bannon. >> our boris sanchez picks it up from here. >> it has now been five full days when we first got the excerpts from "fire and fury"