Look Russia has been bombing ethnic Turks in Syria instead of Isis for a while now. Turkey warned Russia not to bomb the Syrian Turkmen but they didn't listen. This incident was a response from turkey to Russia because of the recent bombings on Turkmen.
Again, are you fucking stupid? Provide proof before you make such horrible accusations.
Russia is the one who is killing innocent civilians.. Russian air strikes 'killed over 400 Syrian civilians' - Al Jazeera English