I posed the question regarding evidence of chems used...

[Agnosticsherbet]

3. So your hypothesis is that the Rebels got weapons and gassed their own people to get our support?

That is even more far fetched.

It was widely reported before this that Syria Stockpiles Chemical weapons. (http://carnegieendowment.org/files/DeadlyII.Ch01.FINAL.pdf, http://www.armscontrol.org/factsheets/cbwprolif)

The Syrian Military has the means to commit an attack. Their control of the weapons gives them the opportunity. Motivation is in the growing size of the conflict that even with the support of Lebanese Hamas and the Iranian Military they have not been able to end. A number of high ranking military men have defected, which shows a military in disarray.

The Syrian government is the most likely culprit in this, not rebels hoping that someone will intervene if they just kill enough of their own innocent women and children.