>How does Maduro being ousted change the physical realities of an amphibious invasion of Taiwan? You think international law is what has been preventing Xi from invading?
It doesn't change the physical realities of that much at all besides maybe slightly further cementing that the US will not come to Taiwan's aid.
No, the main change is that now Xi can more reliably expect a weaker, less unified response from the west due to political divisions inside America as well as between western nations. He can expect less diplomatic pushback, fewer sanctions, etc.
Also, no all serious leaders do not only respect power. Serious leaders who are also morally and ethically good also take into account right and wrong when they make decisions.
The right thing to do would be for America to try to preserve and enforce a rules based order, regardless if other countries do. America has significant agency in the world and should consider how the world should be and try to get there. Not only consider how the world is.
> maybe slightly further cementing that the US will not come to Taiwan's aid
Isn't that the opposite? The US just demonstrated that it can still conduct military operations, and the presence of Chinese envoys in the country does not deter it in any way. As of now, China has one fewer source of oil it can rely on in case of an invasion.
Even from a realpolitik standpoint, there is benefit on showing consistent adherence to an ethical code. It encourages other actors to follow that same code as well. When we violate our own morals and values, we can't expect others to respect them.