Washington is abuzz with rumors that the special counsel Robert Mueller’s report is coming soon. We know that Donald Trump’s Presidency depends on its contents. But with all the headlines of the past two years—this one brought in for questioning, that one indicted, this one coöperating—it can be hard to keep track of what this is really all about. We asked the staff writer Adam Davidson, who has been reporting on the Mueller investigation since the beginning, for a refresher on the basic facts—the broad strokes of what we’ve learned so far. Both parties are strategizing to position themselves for the unknown. But Jeffrey Toobin believes that, unless the report contains a major, unexpected discovery, its findings will have little impact on Trump’s Presidency or on his future. Toobin debates with The New Yorker’s Washington correspondent, Susan B. Glasser, about the lessons of Bill Clinton’s impeachment and Richard Nixon’s resignation.