While considering the acceptability, one needs to consider feasibility as well. The targets are protected. The easiest way to take them out [short of massive manned effort which would need a lot of equipment and be very risky] would be rocketry nuking.
Rodong's are on mobile launcher,and Taepodong is launched on the fixed surface launcher. We also know where these missiles are made. Key production facilities are near Pyongyang. They can be all taken down by air strikes or conventional missile attacks.