I think as it still stands, we don't actually know if they have full nuke capability so for us to fire a few cruise missiles or launch a few nukes over there would cause a world war... one of which I definitely hope to never see in this day in age.
I think this can basically go right back to the movie "Crimson Tide" with Denzel Washington and Gene Hackman... If you haven't seen it, please check it out, it's a great watch but even though it was done quite a while back... the premise of the storyline is freaking scary as hell. Definitely something that I would want to avoid.
Bottomline, there are no winners in a nuclear holocaust.