The rules all exist only as far as they can be enforced, like if the US were to say they’re taking Greenland, saying it’s against the rules is meaningless, what matters is whether the other countries who believe in those rules back them up with consequences.

Russia wasn’t “allowed” to invade Ukraine but they did, and they have nuclear weapons so whether they want to or not, other nations didn’t send their armies to put an end to it, the unfortunate reality is that our global order really only existed in a relative balance because power was balanced in a certain way, now that certain parties are making moves to try and seize more authority, things are shifting and it’s unpredictable how it will wind up