He of the best hair in punditry gives us a preview of the coming political campaign. Anyone who suggests that Iran is not the biggest scariest monster in the world is going to have their comments misrepresented.
I of course never even implied the notion "who cares about a city or two?" The point is that the deterrence that kept a few thousand ICBMs coming our way from the Soviet Union should also work with smaller state nuclear powers, with the added benefit that "mutually assured destruction" simply becomes "assured destruction" - theirs, not ours.
North Korea can also presumably take out a couple of US cities, and that country is both more desperate as well as having a leader who is more likely be an irrational actor. Pakistan is under a dictatorship and is one successful assassination attempt away from who knows what. They too can presumably take out a couple of US cities.
I'm quite against nuclear proliferation in all of its forms and it would've been nice if we had been taking it more seriously. But thinking that Iran shouldn't have nukes is not the same as imagining that Iran with nukes is the "greatest threat to the Republic" that we face. I just have no idea how that computes.