The entire economy would immediately tank, the dollar would crash worldwide, and with it the dollar’s reserve currency, the world would plunge into recursive economic depressions, resulting in mass chaos, mass violence, civil and international wars.
In the united states, we would run out of food in about three days. … I mean. It’s too horrible to even think about.
People would ignore it, defend their property anyway, and civil war would rage and tens of millions would die.
Nuclear weapons are not the only way to bring about armageddon.