I mean that’s a nice saying, but I’d hardly say it’s been proven over the course of History. It didn’t work out very well for the native Americans.

There are 2 sides to this coin, and in bad faith, you use the side that supports your views. The americans also used the very same strategy, but it worked out for them, what is the difference here? That the natives did not identify the americans as the primary contradiction. There are many other examples, like Chinese civil war, the korean war, vietnam war, etc... The point is to identify the primary contradiction, which in this case is american imperialism.

Or it just empowers the capital holders of the military industrial complex and makes America even more aggressive. I hardly think America would be a more agreeable nation under a wartime economy.

And you're completely wrong, the decline of american hegemony is forcing them to give away concesions. Countries all around the world are joining BRICS, Yemen gets away with attacking Israel shipments, african nations are kicking out french and american troops of their countries, even Saudi Arabia is slowly dropping the petrodollar policy!!, something that was immediately punished with bombs in the past (lybia, irak, iran), americas "backyard" is now full of leftists goverments, etc... Its quite obvious that america is losing control.

Examples? Because in the last 2 decades we’ve seen a huge upswing of conservative authoritarian governments being established across the globe.

As i mentioned, americas "backyard". Heck look at Mexico left party completely destroying the neoliberal parties and the US can't do anything more than putting some NYT hit pieces here and there 😅