John Kerry is a joke of a human being. A traitor to his country, a man who leans left but has no core convictions, a vile politician that only survives because the MSM cheerlead and cover for him.
Kerry's NK policy would have been worse. Bush did fail to stop NK from testing nukes, but at least we don't waste nearly as much money paying them off to lie to us under this administration. NK would have done the same under a Kerry administration, only we would have propped them up along the way and made them a more dangerous advisary.
I personally feel that Iraq has been such a disaster that it has rendered the Bush administration pretty much impotent when it comes to NK and Iran. Saying that, I'd rather have a weakened Bush than a Kerry administration of any strength.
Iraq simply shows that we stick to our word about regime change. Kim responds with his nuke and missile threats, but that's not going to deter us from changing his regime as well.