Have you considered the possibility that factions within Syrian Rebel forces did it to make it look like Assad had done it? I'm not defending Assad, but ask yourself who has the most to gain from a foreign intervention? I would say that it's very clearly the Syrian Rebels who have the most to gain from foreign involvement. They're being pounded day by day with artillery and airstrikes and they're unable to operate outside of the cities in force without risking attack from Assad's mechanized forces, including helicopters, tanks and armored personnel carriers. The rebels know that they're unlikely to dislodge Assad, at least in the near term, without European or American airstrikes to destroy Assad's air force and heavy weapons as happened in Libya with Gaddafi. It's very convenient that a small chemical attack(s) occured in the very same city where the international inspectors are looking for signs of chemical weapon use? Isn't it? The rebels aren't stupid after all and they know that Obama has identified the use of chemical weapons as a "red line" which would trigger consequences which they interpret to mean US involvement. Whether or not they're right remains to be seen, but Obama may have just been bluffing with that "red line" talk. Indeed, the Syrian Rebels may have made the same mistake that many of us Americans have, trusting that Obama will do what he says he will do. In any case, it seems likely that the Syrian Rebels will soon be reduced to an armed insurgency in an occupied country if the US or Europeans don't do something to stop Assad. Of course, US or European involvement would likely escalate the civil war and increase the chance of the conflict spilling over into a regional war, possibly involving Iran and Israel.