Comment Re:What are the questions? (Score 2) 313
I wouldn't be so sure. Recent modelling to update the 'nuclear winter' theory has not only shown that the theory is most likely valid, but actually far worse than the model that the Soviets and US came up with in the 1980s. Our current best modelling shows that even a hypothetical regional exchange with as few as 50 Nagasaki-sized weapons on each side between India and Pakistan would cause a "nuclear autumn" bad enough to cause famine in many countries, and a growing season shortened by 60 days the first year after this hypothetical war.
An exchange using the remaining weapons of the former Soviet Union and the United States - well, nuclear winter is a misnomer. Nuclear six month long night is a better description. Daytime lighting conditions in the aftermath of such an exchange would reach no more than that of a moonlit night. Continental temperatures would fall very low, and if this hypothetical war were to happen in the growing season, that's all of your food gone. Water would be hard to get as it would be frozen over. Coastal areas would be milder, but be lashed by constant violent storms due to the temperature difference to the extremely cold inland temperatures. Since the soot would be lofted to the stratosphere, there is no mechanism that will rapidly bring it down and the climatic effects would last long enough that the decade after the war would be a truly miserable experience, and most likely fatal. Those who managed to survive this would then have to deal with a world with no ozone layer and no manufacturing industry to make sunblock. Growing crops would be extremely difficult in those conditions.
We have detonated over 1800 nuclear bombs in the last 60 years. Most of these were bigger than the Nagasaki bomb, in many cases many many times bigger. If what you claim is possible it would have already happened.