They keep missing the point when they talk about Al Qaeda possibly being the culprit for the chemical weapons.
They just state that, "it could have been the other side..." without giving the historical precedent that Al Qaeda repeatedly bombed Sunni neighborhoods (it's own people) to incite Shia-Sunni violence. This fact is what led to the Awakening and the Sons of Iraq. AQ is not above a couple hundred self-inflicted friendly casualties for the cause. There are also the reports that that terrorists were arrested in Turkey with chemical weapons. Granted the sources are second rate at best, but I wouldn't dismiss them just yet...
Yep. My take on all this is we know Sarin was used, but I have yet to see whose hand has the smoking gun in it.