This is another excellent article by Patrick Cockburn proving that Russia indeed is hitting ISIS:
http://www.independent.co.uk/voices/comment/egypt-plane-crash-this-attack-shows-that-russia-is-hurting-isis-a6725566.html

There are, however, some further remarks of interest:
„Prominent among those congratulating President Erdogan is the Army of Conquest (Jaysh al Fateh), which captured much of Idlib province earlier in the year and 90 per cent of whose fighters reportedly come from al-Nusra and Ahrar al-Sham.“
=> So, the most successful non-IS rebel faction consists to 90% of Al Qaeda affiliates and yet you hear western media and politicians seriously complaining that Russia – when targeting the „army of conquest“ – is attacking the „moderate rebels“?

And these „moderates“ do not even try to hide their true color and malicious intentions:
„Mr Gurcan cites a well-informed Turkish authority saying many of these Syrian opposition “groups are trying to sign non-hostility pacts with Isis” – pacts that say they will not fight Isis unless attacked by them. Governments pretending to distinguish between “moderate opposition” and Isis in Syria should keep this in mind.“

In another instance western media launched a smear campaign against Russia distributing and repeating unverified rebel claims accusing Russia of systematically and frequently bombing hospitals.
This is the truth:
Medecins Sans Frontieres and the Red Cross both denied these bombings:
http://m.sputniknews.com/middleeast/20151030/1029343621/msf-hospital-russia-bomb-claim.html

https://www.rt.com/news/320046-stillhart-red-cross-hospital-russia/#.VjK1xu-XwPE.twitter

The third highly interesting recent case of misinformation was when western media (Reuters) changed news which could prove negative for the „reputation“ of western backed rebels and as a side effect could refute earlier claims like „Only the Syrian Army could have used chemical weapons“:
https://twitter.com/adamjohnsonNYC/status/662735640073637889/photo/1

Just look, how „rebels“ was changed to „fighters“ within a day by the same news outlet.