No one has considered that Syria’s Air Defense systems were supplied by Russia, and probably manned by Russians. What will happen when we start killing Russians??
How many casualties do our planners estimate we will take?
None? If you take no risk you can't expect to have any gain.
What if Russians give the Syrians real time data on ship locations in the eastern Med so they can launch active ASCMs at them? What about Syrian planes attacking with anti-ship missiles from standoff distances. Don't count on this being a freebee...