system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] Does the Wizarding world have any kind of contingency plan in the case of Muggles breaking out into nuclear war?

It seems that the Wizarding world generally tries very hard to distance itself from the non-magic folk, leaving them to their own devices. I know the Minister of Magic had direct contact with the Muggle Prime Minister, and id assume all other Wizard governing bodies had something similar for their own local Muggle leader.

But if one day the U.S. decides that "those Chinese sons-a-bitches are going down" and we let lose our arsenal. And within an hour youve got 1000 ICBMs flying to every major populatuon centre around the globe and the whole planet is going to be plunged into a nuclear winter. What would the Wizarding world even do in this situation?
gpt
The wizard Minster for Magic and the Muggle Prime Minister in England are aware of each other, so if there was the threat of a nuclear launch occuring, the wizarding government would be aware of it. 

Somewhere like Diagon Alley, which is in the middle of a major Muggle city and military target, would probably need to be evacuated, Most wizarding communities are remote, so it's possible they would just need to put up a protection charm around their settlement, assuming said charms are capable of keeping out radiation.