I think it's easy to understand... They are Russian cover operatives! Otherwise Russia would be striked too... Let's see the biggest enemy of Isis (all the mujahideen liberation army) is Russia, bashar and Iran...
Heads up, time to raise... (Intellectual niggas don't play poker... If only (like stupid gays, but Russian do).
And if you believe that Russian are innocent little kitty playing saving the civilized people of Syria you are owned (intellectually, financially or black mailed by them), you muppet, before God all life will be judged. in the eternal to trust is the only option. The law is for the weak fucking pokahontas...
IN GOD WE TRUST , then wiping the domestic and foreign ennemies according to the US constitution... The messianic revolutionary total global world dominance program
If we use your logic, we should ask ourselves why ISIS never attacked Germany, Italy, Poland, Hungary, Greece, Japan, china, Australia, Brazil, Argentina etc.?
Probably they all cooperating with ISIS, right?
They are cover agents from all this countries, right?
In fact, there was a lot terrorist attacks in Russia in the last 10-15 years by Muslims, much more than in the West.
Also, in Syria, Russia helped President Assad in fight against ISIS.
I'm sorry but your thinking doesn't make sense to me.