If we want a world in which nuclear weapons are not the primary tools of war (which advantages these smaller players like NK that use it defensively when their means of conventional warfare would be insufficient) then we must work feverishly to undermine nuclear regimes like NK and cooperate with non-nuclear regimes like Iran above all else.
Even within the context of the middle east, we are attacking a state in the process of armament to the benefit of a presumably-already-armed Israel. The message to these minor countries is clear. We are making the political climate inhospitable to non-proliferation.