This estimates potential global deaths from starvation (and does not include deaths from breakdown of society) of around 5 billion. You can legitimately claim these are overestimates, but to say half the US population would be untouched is dangerous and absurd.
You need to be aware of the climate effects of nuclear war. Follow the link Max included in his article: https://www.nature.com/articles/s43016-022-00573-0
This estimates potential global deaths from starvation (and does not include deaths from breakdown of society) of around 5 billion. You can legitimately claim these are overestimates, but to say half the US population would be untouched is dangerous and absurd.