Well, fighter planes are the practical tip of the spear. ICBMs are never the first options to hit a target. Subs have operational limitations — its not easy to replenish a sub with missiles after it runs out of Tomahawks.
Yea, but how many units would it take to blow up all the major murdering moslem cities?
Probably three or four smoking piles would "make our point". The fighter jets would then come in real handy for taking pictures.