>>There are various videos floating around. Watch and make your own conclusions.
>
>I repeat - exactly how is involving Iran going to be helpful in this situation?

It simply would be.
Weather you like them or not, Iran is friendly neighbour of Syria whom they tend to thrust.
So if there was a genuine intention to stop ensuing disaster in Syria (whereas exactly opposite is true! )
then Iran should be among the first countries to consider for such thing.