In fact, the control of the proliferation of '
nuculer
weapons is not up to the United States, or Dubya. The counties already possesing those weapons are charged with policing the the rest of the world. If you had an unstable neighbor, with a history of mental illness and violence, would you want him buying a bunch of shotguns and ammunition? Simplistic, but similar.
Not saying that's right, but it's what we have. Probably a good thing, but I "have my head in the sand".