Agree with your general analysis but I would say containing, degrading and killing as many as we can is "carrying the fight" to them. Not decisive or likely to bring them down but it will do for now.
Coalition jets (mainly US and French) have been bombing for some time our involvement would be no different. We are targeting ISIS if we were bombing Assad's forces your concerns would be justified as a direct threat to Russian concerns. Better sharing of flight plans and following basic rules...
The RAF are already bombing ISIS in Iraq and have used drone strikes in Syria I doubt the threat would change if we sent a few Tornadoes across a non existent border. If we adjust our foreign policy out of fear for terrorism we might as well give up.
Letting others carry the fight in the face...
Or they can speak very quickly
Some expert earlier today was saying the Russians are bombing rebels who have ethnic/cultural links to Turkey in an area that used to be part of the Ottoman empire (most places were!) It must be frustrating watching Russia bombing their nominal friends and...
http://www.bbc.co.uk/news/world-middle-east-34913173
Turks are first out the trap with their version of events/evidence expect the Russians to release pics showing it was flying just south of Moscow at the time.
Putin has been clear from day 1 he's against anything he perceives as against Russian interests and his grip on power. Western policy in the middle east has been a mess but Putin's I told you so routine rings hollow when you see how he likes to interfere in other countries.
In addition the keep...