I would be rather careful when it comes to stressing the religious ties between Iran and Syria. I've argued in the past that any Iranian support of Hamas was relatively unlikely due to their different religious backgrounds, however I feel that I would not do so again: I feel that in many cases, religion will adapt itself to the geopolitical reality of a certain region, and although it may exert some influence over the formulation and phrasing of certain political ideas, within states (and certainly in the post-colonial Middle-East) it doesn't play that big a role. I feel that many times, the Shi‘a-Sunni is utilised in order to create a dichotomy that is easy to understand and apply, but it doesn't really reflect the geopolitical reality.

if Israel & USA would Invade Iran and Kick The Islamic Regime out !! now Assad would have gone 1 Year ago like anywhere else !!
Who are ​you?