1. That fallout would be long-lasting and severe after a nuclear exchange.
I once believed legit that fallout after a nuclear war would really be so intense and would last long, but considering the
7-10 rule and the fact that Hiroshima and Nagasaki were eventually habitable,
If you use small fission nukes used on Japanese cities, yes
But it's about bigger fission nukes and H-bombs, you get dam dirty fallout and some nukes are design to be Dirty for M.A.D.
The golden rule is worst radioactive fallout in first 1000 days after nuclear exchange, what follow are patch of Radioactive Fallout of Cesium-137 and Strontium-90 that radiate for next 90 years
2. Cities would get screwed.
I don't trust some nations but I do trust the US + NATO and Russia, nations with the greatest abilities to conduct total nuclear exchanges, would follow their doctrines, be rational, and really avoid nuking cities in a nuclear war
SIOP-62 was a nuke overkill scenario were thousands of soviets target get three times US "delivery", Moscow had to be bomb with 100 MT exchange on MRBM, ICBM, Bomber and SLBM.
Also were allot of those targets inside or close to Population centers who are wipe out from face of the earth by H-bombs or MIRV in 1983 scenario
And with high population density lying in West USSR a 1961/1962 Nuclear War scenario would left fraction of survivors in former USSR
Same goes for Soviet counter value attack on NATO installation and HQ that for some reason are installed in Capitals first Paris and later Brussels
for 1961/1962 Nuclear War scenario the soviets had leveled Paris killing millions, same goes for Belgium in 1983 Nuclear War with around 10 million dead, oh snap that's entire population of Belgium !
Or the Fulda Gap north of Frankfurt am Main were both side would have fight for because it's easy access from East to West Germany
So NATO and US forces installed EVERY Nuclear option to use there, MRBM, SRBM, Bombers, nuclear artillery, Davy Crocket nuclear rocket-propelled grenade, nuclear land mines.
and allot of those devices were "Dirty" in order to kill enemy in large numbers, own troops and Civilians were "unimportance"
in 1962 scenario the state of Hesse would be radioactive dead zone for next 90 years...
1982 Q.E.D about Nuclear strike on London. you can use also for Brussels, Paris, Moscow, Frankfurt am Main etc...
warning some shocking picture