The little sucess insurgents have had against the West in the Middle east is because they hide amongst civilian population, which ISAF avoid killing.Insurgents dont pose a military danger to the west, they're just a threat to themselves. In a real war they would be destroyed in weeks. Only danger they pose is terrorism.
I think all they do with terrorism is like slowly releasing the trapdoor of the gallows. A few times I read about terrorists whom no one thought that of him. that is I think that one day the west will get VERY paranoid against every muslim, if that isnt already the case, because who knows who is extremist? and then take precautions/actions.
I just dont see this terrorism go on forever, either the islam will stabilize and get some competent leaders that arent batshit crazy intolerant or it will eventually have to be wiped out with its roots. Every day people see the onslaught these islam '.crusaders' cause and eventually I think they will not look at "only the extremists" but start blaming the the entire islam..
It just cant go on forever, I think that one day people WILL go einstein/stalin on their asses, if only out of paranoia.. A family of a terrorist might be a terrorist aswell! That kind of shit.