Over at Pierce's joint Bob Bateman has what I read as a fairly perceptive analysis of why this won't become another Berlin or Cuba, though.
"...there is one immutable thing about Putin's Russian forces in Syria, one that they can't avoid. They need fuel. This is an issue, why? Because to supply the amount of fuel needed by an air campaign requires more than just an airlift. It has to come via sea. Getting fuel from Russia itself to the Russian bases on the coast of Syria involves getting from the Black Sea to the Mediterranean. Bit of a problem that, since that means going through the Dardanelles. Turkey, in short, owns Russia on that count. Unless Russia wants to start a shooting war with all of NATO."How about that; turns out that control of the Dardanelles is as critical to the Turkey-Russia balance of power (and international relations in general) in 2015 as it was in 1915.
Dammit! If only President Trump was in position to throw the 1st Marine Division ashore at Suvla Bay! That'd show those damned Turks!