That would be the big bet. The NORKs have launched from at least three different places. They use decoys. Which one do you hit?
As soon as we hear a countdown start, we obliterat all civilization within the borders of North Korea. When the trigger is pulled we dont stop firing until the enemy concedes the fight. No more 38th parallel. No more North Korea.
Islam is next.
All of them!
All of them. And you do it while they're still few enough in number that you can hit all of them.