the other questions to be asked:
1) if it is a real device detonation, did they develop it or simply buy/borrow it from an ideologically friendly nation?
2) Is American leadership going to keep enabling this by pretending that the Norks will "dismantle their nuclear program" and claiming "great success!" in diplomacy by buying another 5 years between the next big "foreign aid" cash payoff, in which the whole thing goes around again?
Anyone with a memory has seen this scenario a half dozen times already. Nothing has changed except the amount of money paid for appeasement of the pocket tyrant. Except now possibly he can actually hurt other than his own people when he has his next tantrum.
We could've ended this decades ago, and even the "worst case" the handwringers predicted will have been less than what an actual thermonuclear device can do now, even if it's just an immobile "chemical factory with a fuse" (best description EVAR! All the Middle East has to do is make "baby formula" alongside the fusion parts and the Western Media will destroy any leader that tries to destroy it!) it will take out enough NK civilians to make a body count that WWII would whistle with respect.