It was also thanks to some information he had gathered that Trump was able to do something that no other Republican has done before: take on Fox News. An odd bit of coincidence had given him a card to play against Fox founder Roger Ailes. In 2014, I published a biography of Ailes, which upset the famously paranoid executive. Several months before it landed in stores, Ailes fired his longtime PR adviser Brian Lewis, accusing him of being a source. During Lewis’s severance negotiations, Lewis hired Judd Burstein, a powerhouse litigator, and claimed he had “bombs” that would destroy Ailes and Fox News. That’s when Trump got involved.

“When Roger was having problems, he didn’t call 97 people, he called me,” Trump said. Burstein, it turned out, had worked for Trump briefly in the ’90s, and Ailes asked Trump to mediate. Trump ran the negotiations out of his office at Trump Tower. “Roger [Ailes] had lawyers, very expensive lawyers, and they couldn’t do anything. I solved the problem." Fox paid Lewis millions to go away quietly, and Trump, I’m told, learned everything Lewis had planned to leak. If Ailes ever truly went to war against Trump, Trump would have the arsenal to launch a retaliatory strike.