Hmmm, I just noticed this post.
I think that we don't have to worry about neither of them. So they are building nuclear weapons, big deal. India and Pakistan already have them, England has them, Russia and U.S.A have them, China has nuclear weapons too, and I'm pretty sure that we Finnish are hiding ours, but we have one. All the craziest nations on earth have nuclear bombs, what difference does it make if a few more lunatics join the crowd. The more, the merrier, eh?
Because of all those countries mentioned, exactly none of them have an official policy of anilating "non-believers" of their state sponsored religion. Each of those countries listed has their own problems and can be criticized for various things, but they are not actively engaged in imperialism. I'm not sure the same is true of Iran and North Korea.
There are lunatics that make interesting conversation and then there are lunatics that are dangerous to others.
In other words, of all the countries mentioned, none are USING nukes; Iran and N. Korea seem to want them for other purposes than to just say they have them.
Food for thought, as they say.