Here's the irony here: you claim to be anti-war. However, if the US government buried its head in the sand as you advocate, the world would be in much much greater conflict and war than today. You're okay with China and Russia invading only their immediate neighbors? Which ones are you okay with? I assume Taiwan and Ukraine are to be absorbed and its people thrown in gulags in your world view. How about the rest of Eastern Europe? And then what do you think the rest of Europe and Japan and South Korea would do in the US vacuum? They would dramatically rearm, add nukes and every other form of warfare that they could develop to stop the invaders. But you think you would be safe in your bubble of American isolation that you advocate? Doubtful. Clearly the rest of the world would be in chaos and conflict. You'd really want that?
The only way to stop war is to encourage stronger countries from not invading smaller ones. It's that simple. How to do this? Make it too costly for them. Band together. Create economic and defense alliances that will encourage the big guys to avoid war. Russia would not have invaded Ukraine if it had been in Nato. If Nato breaks up, which is a very real possibility if Trump gets elected, Europe will be in war again. Russia wants the Baltics, Finland, Poland and other countries. Your positions are not anti-war.
You think "not getting involved" is the same as "burying its head in the sand". That shows just how good a job the war party has brainwashed the public into thinking the US should bomb anyone anywhere anytime lest the world descend into chaos without our "benevolent" leadership. It's easy to say "oh it is okay that we do it because we're the good guys", but I doubt the people getting bombed think we're the good guys.
I could go into detail about how all those threats you named are exacerbated by US involvement, but that is actually the wrong argument to make because it concedes your core point that involvement is justified but sometimes goes wrong. Still, it is true that those threats you named are exacerbated by US involvement.
You think the solution to peace it to have the US at war with everyone you think of as a "bad buy".
Simple question: How many Ukrainians would be dead today if they didn't have weapons provided by the US and other allies?
How many would be alive today if the US hadn't been pushing its sphere of influence ever farther eastward towards Russia's borders?
Oh, but those deaths are worth it so don't count.
I can't find the story anymore, but a few decades ago some forgettable country was engaged in a civil war. Both factions kept drawing it out hoping for the US to get involved on their side. The problem was, the US failed to notice (for once) and didn't get involved on either side. Ultimately both sides got angry at the US, made peace, and tried to accuse the US of negligence and claimed reparations were owed.
Yes, we've been very mean to the Russians. Poor Russia. But that doesn't change the fact that Ukrainians are being killed. Not Americans. If we stop giving them weapons, it will be a blood bath. Shame on any person who is willing to allow Ukrainians to be killed to settle hurt feelings.
The real deal is that the US has great soft power, Russia does not. I understand that Russia would like to have a greater sphere of influence. It's just good for business. But if they want a greater sphere of influence, I have a suggestion: quit being assholes! If you want more friends on your border, quit stealing your neighbor's land! Quit bombing the shit out of them, targeting their infrastructure, stopping the flow of their shipments, raping their women, stealing their children. Yes, we've been very mean to Russia. But the Eastern European countries turning away from Russia is Russia's fault, not the west.