“We should have ave saved eastern Europe! That would have been the moral thing to do.”
Including the Romanians, Hungarians and Croatians who went forces into Operation Barbarossa? Including Ukrainians who ran the eastern extermination camps?
Would it be moral to ask some family from Tennessee to lose their son to save those countries from facing occupation from the people they willingly attacked?
Not worth a single American life.
Using that logic, we should have stayed out of WWI and WWII, they weren’t our wars.
The Soviets invaded Poland in 1939 with the Nazis, they were the enemy. Then they were losing, that is why they suddenly became “allies”, but they were never our allies. They are still not our allies.
There were many French on the sides of the Nazis as well. Does that mean that it nullifies any help. Again, your logic falls down.
Secondly, we had hundreds of thousands of troops on the Eastern border for decades, so it will cost the US one way or the other. We paid, we always paid.