You are correct in some immediate sense but this war is a bit different because it is actually revealing what using nukes or threatening to use nukes means in t

You are correct in some immediate sense but this war is a bit different because it is actually revealing what using nukes or threatening to use nukes means in the context of war of conquest/genocide in 21st century. If the US completely abandoned Ukraine day one, then Russia would attack a NATO country next cause they would feel the nuclear threat is too much for the US to handle.