Taiwan War is doubtful.

China is watching Russia destroy itself in Ukraine and has realized they can't win an amphibious assault and occupation of the island.

They even condemned Russia for the rocket in Poland (before it was determined to be Ukrainian). This shows they are siding with world consensus against the war and will not risk one for Taiwan.

Russian losses have been shocking to western observers. There is concern now that the war may go so badly that they use nukes - I agree this is a worry. I think western powers are providing enough equipment & intelligence to allow Ukraine to eat up Russia manpower until it collapses, but are trying to limit expansion into Russian territory.