Missiles are 20th century thinking. We have little HumInt in NKorea. Best for Kim to smuggle a bomb onto a yacht and cruise up to the coast.
> Best for Kim to smuggle a bomb onto a yacht and cruise up
> to the coast.
Nukes are more effective when detonated in the air, but a ground burst would still have the potential to kill millions in cities like New York or Boston, when blast and fallout effects are considered.