“It’s none of Russia’s business.”
And most certainly not ours, no matter the events that transpire.
I don’t follow your logic.
Ukraine is a sovereign nation.
It’s none of Russia’s business.
If Russia makes it their business to intervene in Ukraine’s sovereign rights, then it follows that the US can have intervention into Russia’s intervention.
Of course we aren’t sending troops, but we can severely restrict Russian access to Euro markets, increase troops in Poland and the Baltics, operate covert operations to destabilize Russian security...etc.