Not this. Russia sees Ukraine joining NATO as a security concern - whether true or not, so in their view they must pre-emptively strike
Morally speaking, it's not justified for humans to keep making war
Objectively speaking, it's justified from Russia's point of view
> If all we do is justify our current actions with the past, then every country can find some historic argument for invading another country
Unfortunately, history repeats itself because human nature is difficult to change, so that's likely to happen for centuries
> Objectively speaking, it's justified from Russia's point of view
That is such absurd wording. It almost sounds like you're trying to make an argument but you aren't really.
You can always put it like that. "I see Russia as a security concern. Objectively speaking from my point of view Russia is a threat and we should pre-emptively nuke Moscow. It's justified from my point of view."
This. If all we do is justify our current actions with the past, then every country can find some historic argument for invading another country. So yes, US in Iraq means nothing for Russia attacking Ukraine, it is a red herring by Putin propaganda. It is just hard or impossible to convince those who believe in it.