The Washington Post has assigned 20 reporters to look into every aspect of Donald Trump's past as the presumptive GOP nominee seeks to become the next president of the United States, famed Post associate editor, Bob Woodward, said Wednesday."There's a lot we don't know," Woodward told the National Association of Realtors convention,. "We have 20 people working on Trump, we're going to do a book, we're doing articles about every phase of his life."Woodward himself is looking into Trump's real estate deals, he said, saying that "The New York real estate world is more complex than the CIA."Woodward said Jeff Bezos, the Post's publisher and a Democratic Party donor, has urged the paper to cover all of the candidates thoroughly."He said, 'Look, the job at The Washington Post has to be tell us everything about who the eventual nominee will be in both parties, 15-part, 16-part series, 20-part series, we want to look at every part of their lives and we're never going get the whole story of course but we can get the best attainable,'" Woodward said.Woodward, who first exposed the Watergate break-in with fellow Post reporter Carl Bernstein, told the group that the Post also is working to get the "essence" of Hillary Clinton, the expected Democratic nominee. But he said he doesn't believe Clinton purposely tried to use her private email server to send classified information when she was secretary of state."I don't think anyone feels that there was intent on her part to distribute classified information in a way that was illegal or jeopardized security," he said.