Winter is coming.
Not a nuclear winter, I think, but definitely a long and cold one. The idea of an instant climate change as a result of some 12000 nuclear bombs going of in a couple of days (max), will probably turn out to be something just as preposterous human induced climate change itself. Or as silly as energy too cheap to meter.
I would like to emphasize that while I am clearly stating a strong disbelieve in nuclear winter, this does not mean I think it is not possible that “there is a storm coming”, just to throw in another cinematic quotation.