In February 2017, the Washington Post’s Miller had the lead byline on a story based on leaks of Trump’s conversations with Australia’s prime minister and Mexico’s president. Six months later, the Post published the entire transcripts of both conversations in another Miller story. It was through such national security correspondents that anti-Trump sources -- intelligence officials -- pushed leaks of classified information and other tidbits intended to damage Trump into the media. There it merged with other anti-Trump currents in nearly every corner of the press, where it blossomed into Russiagate. After a nearly two-year investigation, the special counsel found...