The stunning resignation of CIA Director David Petraeus, days before he was to testify on the CIA role in the Benghazi massacre, raises many more questions than his resignation letter answers.

“I showed extremely poor judgment by engaging in an extramarital affair,” wrote Petraeus. “Such behavior is unacceptable … as the leader of an organization such as ours.”

The problem: Petraeus’ “unacceptable behavior,” adultery with a married mother of two, Paula Broadwell, that exposed the famous general to blackmail, began soon after he became director in 2011.

Was his security detail at the CIA and were his closest associates oblivious to the fact that the director was a ripe target for blackmail, since any revelation of the affair could destroy his career?

People at the CIA had to know they had a security risk at the top of their agency. Did no one at the CIA do anything?