and we're talking about a confrontation with Russia right now, not with China. If China wants to pay the bill for Russia's adventures they're free to do so, but from their ambivalent reaction it's pretty obvious that they're not to keen on it either. The West is 50% of the world's economy, Russia 2%. China knows this.
There's no reason to instinctively flinch every time someone in the Kremlin or in Beijing throws a tantrum. Leadership in China and Russia responds to strength and making countries pay a price for moving borders violently is going to make the world more stable.
The US and Europe aren't going to get nuked, where do you think the children of all those leaders live right now? You think they're gonna glass their own kids in those fancy apartments in Rotterdam, London or New York? It's just bluster.