Re: Bigger is not better
The weapons that the Norks have detonated to date have been relatively low-yield fission devices, the most powerful of which was estimated to be no more than 30KT. Depending on design, it is true that low-yield fission devices can be more efficient at producing E1 effects than fusion devices, but the effects are limited to line-of-sight. The E3 effects are what knock out the power grid, and the E3 effect of low-yield fission devices is insufficient to produce anything other than regional outages. Thus, NK would be best served attacking the northeastern part of the US where its financial and federal centers are concentrated, but their current delivery vehicles are incapable of reaching this area from their territory. To overcome this NK could develop a ship-launched weapon.