Once ISIS has established their "state", then we can bomb the living dog dookie out of it. They won't be able to do the same to us because monkeys can't fly sophisticated jets.
When you can target your enemy with air power, but they can't reciprocate it's pretty much game over. Just ask Germany and Japan.
It may not even come to that because ISIS can take territory -- but it's much harder to hold on to it once you have it. And it's not like you use Islam as an infrastructure. Things fall apart without doctors, plumbers, people to maintain a stable way of life. They'll most likely overreach and be destroyed from within.
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