Well said ^^^^ @Gromit. If the rebels didn't end up Talibanesque, I'd have been surprised although that probably makes me sound horribly prejudiced.
@Venator
//IS are winning the game - but what should we do? Should we go away and stop meddling in these countries? //
Annoyingly, I feel the need to fudge the answer to that one:-
Instinct tells me to think that yes, when the machine is responding erratically to your control inputs, you should stop meddling with it (if only the global economy was treated in this manner but they insist on tinkering with it).
However, for as long as we depend on them to fuel our economic activity we are obliged to choose between hands off, letting them have their way (religious totalitarianism) or armed intervention and turmoil in at least one oil producing state at a time.
As we have observed, this gets civilians killed across vast swathes of territory and, since the region is so overwhelmingly *not* ethnically diverse (hard stare) it just looks like the West hates Muslims, generically: we appear to not care whether Sunnis, Shi'a, Alawites, Wahhabists etc. get caught in the crossfire.
If anyone can point to which sect is dominant in IS then well done them. If they are succeeding in unifying factions then I will have to accept that the statement "bombing drives *all* Muslims towards IS" is true.