General Petraeus probably has the broadest base of relevant experience, but he has one serious strike - getting framed for illegal possession of classified material outside of secure locality, and sharing it with a person who, though she also had similar clearance, was not a designated recipient.
And I call it “getting framed” because of the HUGE and repeated breaches committed with apparently willful aforethought by Herself, Madame Benghazi, the Cold & Joyless. That was airily dismissed by a totally corrupt Department of Just-Us, for purely political reasons. Petraeus was held accountable, Herself has not yet been brought to account.
Fortunately Herself was not elected to the Presidency, and it is no longer her call. Or of the Clinton News Network.
Further on down the road, CNN would be sure to bring up the previous lapse of General Petraeus, and use it to beat him over the head repeatedly. This was their crafty way of inserting an issue for later “exposure”, and proceed to further discredit the Trump Administration for “bad choices”.
Petraeus made the mistake that has ruined a lot of good men’s careers. I still cannot understand how otherwise bright, talented and rationale men continue to succumb to the centuries old temptation of illicit sex. But, it happens and they often pay the price with their careers and reputations. I used to be a big Petraeus fan, but he disappointed me greatly when he dropped his trousers for that Autobiographer. Sorry, it hurts, but that is just the way I feel. Such a waste!