Maybe, at least part way. The Norks are showmen, albeit as low grade street theater. A lot of this stuff they're doing is just chest thumping to get more “treats” from those that can be shaken down. Well, it worked in the past with the Clinton/Albright circus. Why not with the Obama/Clinton rerun?
They don't have to actually drop a nuke on HI. All they have to do is get one of their missiles to hold together long enough, and put the warhead (probably concrete ballast) into the general vicinity of the islands. It's all just a demonstration anyway. If they can pop an underground nuke (even if it's a “lab device” that couldn't be launched), at about the same time they deliver an inert warhead into the region they've got a bit more street cred than they had before
The US will quite likely cough up some fuel and food to buy them off for a bit longer, and it'll probably work....for a while.
I'm just telling you what I think is going to happen. Personally, my opinion is that it's best to ignore them entirely so that there's no reinforcement of their sociopathic behavior. If they actually did load a nuke on the missile, and really got close enough to do some damage (wouldn't be much given their low yields), the nuclear response would knock them back further than the primitive state they exist in now. Do you suppose anyone over there would notice?
Bombing N. Korea to The Stone Age would represent a move FORWARD in time.