FUCK THE POLICE
911 EVERY DAY
i think it could be phased ( multi -staged in Japan and Hawaii to). If the Chinese launch, it's all over.
ABM systems are the key (I'm not an expert on them) to dealing with irrational state actors like lil' Kim
Implementing ABM's would encourage China and Russia to do the same. They're not going to sit back while we nullify their strike capability saying "oh, this is meant for the North Koreans only".