This is what we've been trying for 50 years and it has not worked.
The history of NK has shown different. The famine of the nineties almost brought NK to its knees, but China and the US (including President Bush) sent them the food aid to brink their country back from the brink. I guess this Administration has to make a decision between starving this despicable regime out (and thus, allowing a lot of innocent people to die) or allow even more people to die when these maniacs nuke someone.
Tough choice that I would not want to make.