I'm sure Kim would love to have NK attacked, this will vindicate his policies and finally give him a reason to start a war with South Korea and Japan.
As I understand, there is about zero intelligence on NK assets (besides what can be seen from space) so taking them out in one strike is impossible; and if Kim has just one short range missile left and one nuke, he'd have it launched somewhere (doesn't matter where, it would be bad anyway.)
My first thought....exactly. You beat me to it.