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I'd like to think that it wouldn't result in a war. The Russian Ukraine war only happened because Ukraine is not part of the EU, and is not an official ally of a lot of nations. The Philippines and a lot of Asian countries are official allies of the US, and the US will be forced to honor this. I think China is just posturing as always. The Philippines has won an arbitration with the UN against China, so if China continues going against it, they will go against a lot of countries.

Maybe you're right, time will tell...but history shows that humans have a propensity for war and the inability to sort through these issues in any other way. Considering Australia is one of the three members of the AUKUS security partnership (which pissed off China), and other alliances as well, Australia will stand with those opposing China, and I agree with my country doing so.