WWII seems to be a good example of war literally right outside the countries involved.
We're not that generation of people. We are much less interested in war, and proof is how many people in Europe today don't want a war with Iran. It's not "just a few".
Now I’d imagine the immediate aftermath of the collapse would slow conflicts for a time. However, I think the collapse of the US would increase the already increasing desire for weapons production in Europe and with “defense companies” in the US dissolving, the manpower would head wherever there is pay for weapons. (Or it would stay in the US forming terrifying little weapons manufacturer feudalist states still making weapons for wars across the sea… I really shouldn’t give the universe any ideas…)
Europe only wants weapons because the world is becoming more violent since burgerland elected the pedofile.
I also think the collapse of the US will fuel the already growing right wing movements in other countries as Nationalism and “protecting our country from the enemy” will become even stronger pathos in the wake of fear and insecurity caused by the upset in world order.
Do you know who's been fueling and powering those right wing movements here? Yup, it's, again, something from burgerland: facebook, twitter... and now even tiktok. Getting rid of them would only do us good.
It's still frown upon to say "We're doing it because I don't want you to talk about how I raped kids". That's why.