Yes, I was wondering about the various Islamist splinters, or whatever you call them, and if the RAF are being asked to differentiate amongst them. However, I guess the obvious criterion is whether they threaten the West, so Al Nusra presumably will not be bombed, and might even be useful to fight IS.
But the numerous splinters and 'supergroups' show the problems in intervening in Syria. I guess if the intention is purely to stop attacks in the West, that is one thing, but the idea of a 'peace plan' seems rather vague, since you have the problem of who will be involved.
There has been talk, for example, of Al Nusra being supported by the West against IS. But then, as we know, Al Qaeda were originally supported by the West.
It seems so easy to make things worse, especially with all the cross-currents - Russia is bombing the FSA, Turkey is bombing the Kurds, the West is bombing IS, Hezbollah is pursuing many rebel groups.
Presumably, we will be taking more refugees now.