In defending his statistics earlier today, Gen. Petraeus said that two US intelligence agencies had signed off on his methods for collecting and analyzing the data. But he didn't say which two.

There are 18 US intelligence agencies, though probably a far smaller number have any direct competence for analyzing this kind of question. And Karen DeYoung's recent piece in the Post reported that the CIA and the DIA was following the same methodology as the GAO, which Petraeus's shop has said is all wrong. There's a lot of alphabet soup here, I admit. But the upshot is that the Post seems to be saying that CIA and DIA don't agree with Petraeus's methods.

So which two intel agencies is Petraeus talking about?