It was once reported by a journal of physics that the all out nuke war would not have been as bad as people claim it to be. What motivated that article or what group was behind it I cannot remember but I cannot trust a report like that fully. Nor could I report the MAD assumption because of who that would usually come from - and that was the precursor to the Global Warming science.

Regardless, it's always a good idea not to nuke a planet into the stone age.