https://en.wikipedia.org/wiki/Bretton_Woods_Conference
We don't know much of it anymore with the decline of Europe, but for several centuries the dominant geopolitical goal of most countries on Earth was to defend themselves from European invasion. Why do you think every incremental ratchet step on the gear of Germany rearming in the last three years has been taken as serious headline news by so many?
Cause they started two world wars previously. The second one coupled with genocide, actually multiple separate genocides going on at the same time.
It is not that other countries were full of saints ... but Germany did started both those wars.
But even reading history isn’t enough. I think we’re fundamentally not equipped to understand what a large number of deaths actually looks and feels like. 10 deaths happening in our vicinity is an unbearable tragedy. 1 million deaths is just a number. So folks are struck by a nostalgia for a time when humans killed each other by the millions.
In some ways they remind me of the people who long for the days before vaccines eliminated a bunch of diseases.
(IMO there has actually been a retreat from China trying to do propaganda "please like us" adventures overseas in the past few years. Peaked round about https://en.wikipedia.org/wiki/The_Great_Wall_(film) / https://en.wikipedia.org/wiki/The_Battle_at_Lake_Changjin - second highest grossing film worldwide of 2021! For a Korean War movie?!)
Of course you might get a bit of radioactive dust blow over the sea for a few hundred years but totally worth it.