> So why would Syria's government be kind of subdued about it all?
Because Russia's fearsome Tor-M1 system -- which was never turned on in the first place -- has their back. The Tor is a seriously bad-ass antiair system, not to be messed with. Israel was trying to provoke a response, most likely as a test run for a US airstrike on Iran (Iran has a number of Tor-M1 units). They failed.
-- DRR