I think everything you said is true, except there have been a couple of legal wars. The intervention in Kosovo was sanctioned by the UN for example. The UK carried out a legal war of self defence when Argentina invaded its overseas territory of the Falklands. Ukraine is legally trying to repel Russia.
I wouldn’t say that committing war crimes makes the entire war illegal, either.
In the end “it’s illegal” is a shorthand; it expresses a certain kind of reasoned opposition but shouldn’t automatically be the end of the conversation.
I think everything you said is true, except there have been a couple of legal wars. The intervention in Kosovo was sanctioned by the UN for example. The UK carried out a legal war of self defence when Argentina invaded its overseas territory of the Falklands. Ukraine is legally trying to repel Russia.
I wouldn’t say that committing war crimes makes the entire war illegal, either.
In the end “it’s illegal” is a shorthand; it expresses a certain kind of reasoned opposition but shouldn’t automatically be the end of the conversation.