I think Petraeus was set up intentionally years ago .... the real question is whether or not he was compromised. Trump needs the answer to that question.
He pled guilty to a misdemeanor charge of mishandling classified material, giving his mistress access to his schedule and other material while she was working on her book.
State has a big classified material problem. For that reason alone you can't put somebody in charge that has a classified material problem.