Seems to me that we should be calling this War - Nato/US vs. Russia - for it’s quit obvious now this is their war being fought currently on Ukraine soil....and it wouldn’t be a big jump to say it’s the US vs. Russia War.
This is why I place the current conflict so high on the temperature scale. The level of certainty that it will formally spread to nato is increasing. Nato now appears to no longer fear the Russian nuke threats, leaving Putin to issue even shriller threats, and some think he may very well carry it out.