From my view I wouldn’t believe what Elon Musk says nor do I think WW3 has started. Chinaif anything will supply Russia with weapons in a similar way NATO is supplying Ukraine.
Biden has warned China not to get involved or there would be serious consequencies from the west. Whether China heads that warning is another thing but, they would have a lot to loose if sanctions were to be put on them.
As for Belarus, Lukashenko being a longterm Allie of Putin, I doubt he will send his army in and so far he has resited. There’s also the possibilty if he were to send his men to war they would side with Ukraine. Lukashenko had/has very little option but to allow Putins men to access Ukraine from Belarus. Probally in fear of Putin annexing if he didn’t.
China, Taiwan theres a potential to spill over into war, but Taiwan has a security agreement with America and America would have the backing of other NATO members. So it’s probably nothing but hot air, at least for now.
Israel and Palastine have been fighting on and for decades and very very unlikely to spill into a world war.
As for North Korea they are a rule to themselves.
My own oppinion is whils’t there maybe tensions between the east and west I can’t see it leading into WW3 at least in the short to medium term.
Vut what do I know, maybe @mitch or @BigDave would throw some light onto the situatin!