Not fun. North Korea has become a problem for China, and they cannot act directly without losing face. However, if they trick the US into erasing North Korea, they are blameless. In fact, they could claim the moral high ground even with some significant retaliatory acts, all while ridding themselves of their problem.
This was not a joke, it was potentially deadly serious. With an idiot such as zero in the White House, it very well could have worked. My guess is that obama wasn’t even told until the hack was verified as such.
Don’t we have satellites watching the area? No boom, no flash, no attack. I wouldn’t trust an email message.