But didn’t he go along with O’s initial lie about blaming the video when he briefed congress? He KNEW that was a lie at the time. Two of those men that were murdered were CIA, his men...disgraceful!
I believe he was blackmailed to tell that lie. This is why it is so important that he does testify, because he needs to explain why he lied in the first place.
Now that could make sense, though it might be too much to hope for. But it's possible that he had already been blackmailed to go along with that ridiculous story, and eventually he decided that he'd be blackmailed no longer so he got the blackmail threat (the affair) out of the way, then resigned. So, now he can tell the truth.
It's plausible, and I sure hope it's true, but it's anyone's guess at this point.
And I also think the most damning information would concern who knew of the requests for assistance from the Americans in Benghazi, and who denied the requests for that assistance. That is far more damning than the lies about the reasons for the terror attack, and all that is still to be discovered if someone will step forward and tell the truth.
And it's more important that we learn about who denied the asssistance than anything about why Petraeus went along with the Obama lies about what caused the attack.