But firstly, you assume a volley. What if the defender is attacked without warning and is so dramatically damaged that there is no real response possible? Secondly, you grossly overestimate the actual effects of realistic usage of such munitions. The greatest utility of nuclear strategic munitions is to blow huge holes in an adversary's strategic forces and in their command and control. I realize we in the West have been brainwashed by pacifists, utopians and intellectuals into imagining nuclear carpet bombing, last days spent on beaches in Australia and nuclear winters. Certainly, such notions provide drama, and give the pacifists and disarmament fanatics their perceived bully pulpit. Courageous are the men of the West who dare to challenge this orthodoxy.
I disagree. Cities would be involved.
The government is barely able to deal with natural disasters. A large scale nuke exchange would be untenable.
It's simply not an option between civilized nations.