I see. I'm glad you answered this in the spirit it was intended. On reflection, it may have come across a bit sarcastic, which was not intended.

At what point would the shelling of ethnic Russians in Ukraine have justified war? This doesn't seem to have been the tipping point, as it happens, which seems to have been the threat of Ukraine joining NATO. But it is an important factor that goes well beyond 'just' having a Nazi presence, which I agree does not justify war (which can only be justified in self defence, in my view).

The US may have interests rather than friends, but China does things differently. Participation in the BRI, I believe, depends on a willingness to act as 'partners'. That concept seems closer to friendship than to mere interests. From a class perspective, a country's bourgeoisie will have interests rather than friends, but their workers can, must, be friends.

This would be clear cut where there were a dictatorship of the proletariat, which Russia is far from, nowadays. Still, if the notion of interests-not-friends is not universal, then a more subtle analysis of Russian actions may be required.