If you aren’t familiar, look up Tsar Bomba on youtube and witness how terrifyingly destructive a 50 megaton warhead is. Then look up the abject cruelty that is the Neutron Bomb. Education on nuclear war and fallout is of the utmost importance, to get people around the world in the mindset of disarmament.
There is practically no fallout from air bursts.
Nuclear warhead is a late WW2 strategic bombing raid in a 100kg package, delivered in a fraction of a second, and with no protection against it.
Tsar Bomba was a one-off experiment – and one designed for some level of psychological intimidation that you appear to have fallen for. No nuclear-armed country today maintains 50-megaton warheads for actual use against an adversary. Instead, planning involves use of a larger number of smaller warheads, and that is already enough to be worried about.
You dont have to kill everyone in nuclear strikes. Destroy every single powerplant, radio station and port in a single strike and watch them going back to dark ages in matter of minutes.
No electricity and no communications means mass chaos. every city becomes a unsustainable trap with no supplies.
It would be terrifying to be in a middle of that. A nation that would tear itself apart for self preservation while all supplies are somewhere far out, 'in a place where food comes from'.