LOL, isolationism and no understanding of geopolitics.
The US is as rich and powerful because one of their key exports is safety for their allies.
Once that goes out the window many other things might change or fade away.
Trying to be top dog of a global trade empire and being an isolationist don’t go well together.
And if the US where to abandon Europe/Ukraine, why would anyone care to stop trade with China, once the inevitable clash between the US and China occurs.
The US needs their allies just as much as they need the US.
Ukraine has been targeting Russia’s radar and early warning capabilities, allowing them to fly drones into occupied territory and into Russia proper to hit high value military targets, refineries, factories and more.
The A50 was in part to coordinate airstrikes on the front, and in part to fill the radar gap.
Now the gap needs re-filling… Again…
In the mean time, refineries and fuel depots burn, airfields get hit, ships get sunk. It’s getting harder every day… for both sides… but the loss rate for Russia is only sustainable as long as their enormous reserves last… But they are dwindling…
This is the attritional warfare Zalushni was talking about. It’s like 2 boxers beating the crap out of each other untill one has had enough, can’t raise his arms anymore, or goes KO. And neither is KO just yet.