My first thought reading the headline is: I don’t see how Russia is building up a stockpile while burning through their stockpile it in Ukraine. That makes no sense whatsoever.
Russia is also burning through bodies so I don’t see them being particularly able or willing to try to invade Norway or anywhere else anytime soon.
It seems from all accounts they’ve got their hands full in Ukraine and are making little or no progress.
I think you’re right about buying US weapons. I don’t think it is warmongering but rather shilling for the military industrial complex.
Edit: still, I wouldn’t disarm or anything and maybe somewhat shore up defense. Maybe a decade or two Russia tries some more stupid shit.