Sarkozy isn’t stupid. Just because the ‘youths’ are hiding behind their mommies doesn’t mean that he is going to ignore them. Some will decide to act like a decent Frenchman and others will get the boot. This is what he has campaigned on and I think he can deliver (pending a favorable June National assembly election).
France doesn’t have to go to war to solve their problems. They can instead slowly and deliberately eliminate the problems. Their will of course be periodic riots and strikes. But if Sarkozy doesn’t relent and minimizes the effects, the problems will be annihilated with the minimum amount of pain and destruction.