So, just an observation, looking at the Turkish map that's been published, it looks like the incident occurred in the Northwest corner of the country, not far from Jisr ash-Shughur. That's hardly an ISIL-friendly or ISIL-controlled area, and is mostly under the control of the FSA with some pockets of al-Nusra Front support. Granted, it's not far from the Russian base in Latakia, but what were their planes doing circling that area in the first place?
Russia has dropped more bombs on the Free Syrian Army than ISIS, so this wouldn't be anything new. It's not surprising that the moderate rebels and Russia don't get along well.
This is from early October, so things might have slightly changed since then:
The Free Syrian Army is even worse than ISIS, considering that they are fighting the only government in Syria that can hold back ISIS.
'Tis a shame Turkey is in NATO, because I hope Putin brings the boot down on that prick Erdogan.
Which is more useful to control Syria?
The neighbour or a distant neighbour?
Also, note than Putin mostly bomb FSA, not ISIS. It's normal, his goal isn't to defeat ISIS, it's to defeat FSA so the only oppisition on Assad is ISIS, forcing the West to back his dictator pal Assad (between dictators, they help each other).
Stop being so naive about the new, rebranded USSR.