I must admit I'm still working the red wine through my system, and your posts have been a little wordy... I haven't read them closely, just skimmed them, sorry
But yeah. In order to organize a chemical attack, you must have at least:
1. A (relatively) safe storage area.
2. Effective transportation lines.
3. A functioning means of communication.
4. A means of delivery.
Which side has that?
And to counter Sarmatian's post: just because Assad cannot flush out the rebels doesn't automatically mean they have the capabilities to enact complicated attacks. The US is incapable of flushing out the Taliban, yet I highly doubt they have the capability to orchestrate a chemical attack.
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