After WWII, the US spearheaded a new idea in geopolitics... instead of empires, the world would use a system of institutions like the UN, the WHO, the WTO, and the world bank to resolve disputes. The US invited countries to join this alliance network. In exchange for being able to trade with any country in the world (with the US guaranteeing freedom of navigation across the oceans) that country would agree to join the alliance network and basically have the US write their security plan. This was a remarkably effective strategy for both the US and the other allied nations. The US got the benefits of an empire without the nasty necessities of brutally oppressing the other nations under its umbrella, Russia (and later China) were effectively contained, and worldwide economic growth was exponential, with the US being the trading hub for all that money flow, which gave them enormous intelligence gathering potential, not to mention leverage.
The fact that the US forgot how it became the only superpower is rather sad. Yes, there were several missteps along the way, like Vietnam. But it was largely successful. The second gulf war was the first breakdown of the rules-based world order. The UN refused to authorize an invasion of Iraq, and the US said, "to heck with you, we're going anyway, and if you're not with us, you're against us." It's not a coincidence that Putin used the second gulf war as justification when invading Ukraine.
I appreciate that the American people no long want to be the world's police force. I really get it. The thing is, the US did this because it had just fought two world wars, and they knew that Europe, being Europe, was just going to keep fighting wars over and over again, and the US was going to be drawn in every time. When this rules-based world order falls, we're going to see a (hopefully conventional) WWIII, and the US is going to be drawn in again. Everyone in the geopolitical space seems to be saying this is pretty much inevitable. It's sad, but it's a bit like watching a train wreck, and being powerless to stop it.
Both Russia and China had a chance to adopt democracy and join the rules-based world order, and after flirting with it, both have recently turned their back on it. Can Europe save itself? I don't know. It's been demonstrated how to go about it. But can the diverse people of Europe come together and do it? I don't think they're capable.
The bugs you have to avoid are the ones that give the user not only the inclination to get on a plane, but also the time. -- Kay Bostic