What is the weird childish liberal need to reduce everything to good guys and bad guys and what's "right and wrong" (as if we, the genocidal collective west could recognize either at this point) without ever looking into the facts, the history of a place or what the people living there have decided already. This is a conversation about geopolitics, about the logical and predictable working of state machinery. "Justified" is not a word that means anything in this field. You might as well hold up everything to weepily condemn the authoritarianism of physics. Something either is or it isn't. "Right" is a nonsense hueristic in this situation. Might makes reality.

Taiwan should have used military force - or again, that might makes right.

"Should have" used military might? Are you from a parallel dimension where the First United Front didn't end in the Shanghai Massacre? Tell me how it went down in your reality then. Chiang embraced the CPC from behind with hugs and kisses as a show of his appreciation for their alliance against the warlords?

I don't have a morality problem because Chiang was an incompetent and corrupt jackass who started the civil war that he ended up losing on the mainland and having to flee to Taiwan Island.

It is about what you believe justifies a nation's independence

My arguments as to international law go precisely towards your factually incorrect and repeated assertion that Taiwan Island is a "nation" or a "country". You accuse me of "deflection" but you repeatedly asserted a factual and legal inaccuracy and refuse to address it. Your problem if you can't engage with the argument, not mine. There is no such thing as a country or nation called "Taiwan" in the world.