My biggest fear are shaped charge airburst nukes. Basically two in almost tandem, exploding in sync, one above the other. One generates a Pressure ball above

My biggest fear are shaped charge airburst nukes. Basically two in almost tandem, exploding in sync, one above the other. One generates a Pressure ball above the other, forcing its explosion into a much more destructive ring. Do that with hydrogen bombs and you get weapons were one such warhead can level entire metropol areas and one icbm can carry multiple.. SF would be a circular coral reef after that