The US withdrew from Afghanistan and Iraq, ending mistakes made almost 20 years ago.
Russia attacked Ukraine 2 days ago.
So we should follow the model of the current day aggressor, not of the country that's at least trying to change its ways?
And how is all of this relevant in a discussion about Russia attacking Ukraine, anyway?
Some call this the Chomsky principle: "My own concern is primarily the terror and violence carried out by my own state, for two reasons. For one thing, because it happens to be the larger component of international violence. But also for a much more important reason than that; namely, I can do something about it. So even if the U.S. was responsible for 2 percent of the violence in the world instead of the majority of it, it would be that 2 percent I would be primarily responsible for. And that is a simple ethical judgment. That is, the ethical value of one’s actions depends on their anticipated and predictable consequences. It is very easy to denounce the atrocities of someone else. That has about as much ethical value as denouncing atrocities that took place in the 18th century." - Noam Chomsky
Nobody can fix the past, just apologize for it.
Right now we need to fix Ukraine.