It's actually about one major thing. Will China invade Taiwan, a country and 20 million people that have lived free of the Communist Party for 70 years, and if so, what does that mean for the US and allies to do something about it or let it happen?

If the US tries to prevent it, that's a package of huge "war-like anti-Chinese (government) sentiment" ramifications that should've been grappled with a decade ago.

If the US doesn't prevent it, Pax Americana is officially over, and the world will know what the collapse of World Order really looks like and what that means for the diminishing prosperity that first worlders are accustomed to.