Again, how? It's easy to say we should bomb them. But how?
If (a huge if) any government had any idea about these 8-10 (or more) extremists, they were likely living in Paris, or London, or wherever. It's not like they're all sitting in some area called ISIS.
I doubt these guys were walking around the months before this attack waving an ISIS flag. It's non-traditional warfare. They don't wear uniforms or wave a flag. They blend in like other citizens and attack with a bomb in a backpack or guns in a theatre.
I just don't see how you "bomb" your way out of this fight. I wish it was that easy. But I don't think that's remotely realistic. You're thinking way too simplistically.
they are not on their own and are being financed by a larger body. You need to cut off the head of the snake..financing, training etc etc..once it gets to the point of random guy with backpack we ate fucked