Russia opening up the conflict to one with NATO makes less than no sense. It would be actively detrimental to their goals in Ukraine. I could see Russia striking some covert NATO forces inside Ukraine in retaliation, but anything major would allow forces from e.g. Poland to enter into the conflict and extend it at a time where Russia is cruising towards inevitable victory, and outright military defeat of NATO would either take decades or result in nuclear war. Neither of which would be sensible.
Russia is boiling Ukraine’s and NATO’s frogs far more effectively than they are boiling Russia’s. There’s a similar dynamic at play with Iran and Israel, where Israel is like Ukraine and Iran is like Russia. Iran has no need to imminently strike Israel and destroy them because Hezbollah, Hamas, and Ansarallah are (however unfairly to the populations of Palestine, Lebanon, Syria, and Yemen) are boiling Israel’s frog far better than Israel and the US are boiling Iran’s.
Ukraine’s constant attempts to get the US and Europe involved in the war mirror Israel’s constant attempts to get the US involved in the war, and Russia’s willingness to be patient and accede to a degree of humiliation in return for a successful long-term plan also strongly mirror Iran’s patience and somewhat embarrassing moments (trying to make a deal which delayed the strike on Israel a month or two ago). Neither Russia nor Iran can simply put up with countries constantly trampling over their red lines and so have to make big displays occasionally, but otherwise are content with how the geopolitical situation is progressing, I think.
In all: if you have time on your side, then tread carefully. If you do not, then flail wildly and go for million-to-one odds.
curiosity for what comes next, as we are going to live through what may be the most turbulent times in human history and I wanna see how things go