[Fitzcarraldo]

The Japanese Cabinet in February approved legislation that would allow the defense chief to order the military to shoot down incoming missiles.

The North Koreans, taking the Iranian's advice, would explode a warhead high over the center of the Japanese island, to maximize its EMP effects, hundreds of miles in the air from Patriot-missile type defense systems.

[Fitzcarraldo]

Given the above, the North Koreans do not need pinpoint targeting ability for an EMP strike over Japan.