I think Clinton will be called upon to fall on her sword.
Remember all of the people who bit the bullet for the Clintons regarding WhiteWater? They had the Clintons dead to rights; that should have ended his presidency. Instead, half a dozen other people bit the bullet, went to jail, and the Clintons skated. I'm guessing that is what will likely happen here. Hillary and other underlings will be called upon to take the blame and provide Obama with enough plausible deniability about his role in Benghazigate to allow him to escape impeachment. I have a sneaking hunch that Hillary is about to find out how all those underlings who made it possible for the her and Bill to remain in the White House felt. She may have to kiss her presidential aspirations goodbye, but I'm betting that Obama remains in the White House.
I'm not given to conspiracy theories, but you would have to admit, if Obama really has aspirations to become a three term president, this would be a really elegant way to set it up. HE denies reinforcements to Benghazi. Clinton, however, falls on her sword, ends up taking the blame, and is prosecuted - destroying her presidential aspirations. His biggest rival at the moment, the heir apparent, is now out of his way and, assuming congress passes an amendment to the Constitution permitting him to run for a third term which is then ratified by the States, he has a clear shot at a third term.