This will quickly go into OMNI territory, but official reason (regardless what Russia does actually) Russia's involvement to Syrian Civil War is to 'fight ISIL'.

If it will end up that Russia's involvement caused this, well, it is not even a slap in face, it is punch in face to one person. And that person is Vladimir Putin.

Not even talking how much shake of confidence it will generate amount those 89.9% who approve his policy.

But. I think we should not switch discussion on this matter. Let's wait, truth will be determined eventually. And I would not trust or publish here sources from tabloids.