In the war between Russia and the Ukraine, Russia will win. However, in the event US or other NATO forces join in on an official basis, I cannot say what will happen. The strength of the US military has degraded in the last decade, and I do not know how much.

I think China may actually be invaded by Taiwan. I am not provided examples of Chinese military conquests that have impressed me. China lost to Vietnam, and seems to be fairly evenly matched with India. Taiwan may have a decisive edge in competence that China cannot bury under sheer numbers. I certainly don't think China can invade Taiwan and secure the economic assets Taiwan possesses, because the chip foundries are rigged to blow in the event they are seized by military forces. Because of that, China is strongly deterred from assaulting Taiwan. China is utterly dependent on chips Taiwan produces for it's manufacturing industry, and it cannot seize those foundries by force and get chips, so it's only option to maintain it's industrial production is to buy chips from Taiwan.

China has made some progress towards manufacturing chips, but it has not come anywhere near the quality that Taiwan produces. If China becomes able to manufacture high quality chips itself, then Taiwan may be at risk of invasion and conquest, but as long as China cannot make the chips it needs, it does not dare collapse it's industrial economy by destroying the Taiwanese chip foundries on which it depends.

Thanks!