See North Korean Threat: EMP? Death by Threats?.
And U.S. Confirms North Korean Sub Missiles:
The commander of the U.S. Strategic Command, in charge of U.S. nuclear missile forces, confirmed on Thursday that North Korea is developing a submarine-launched ballistic missile (SLBM).Duck and cover? Better have a better plan than that.
The comments were the first official U.S. government confirmation that North Korea is working on a new underwater missile capability and comes as the regime in Pyongyang has tested nuclear weapons and claims to have miniaturized a weapon to fit on top of a missile.