Hmm... Maybe you are right, I just read up more about the International Court of Justice, and it looks like the United States are no longer over ruled by this court...

"After the court ruled that the United States's covert war against Nicaragua was in violation of international law (Nicaragua v. United States), the United States withdrew from compulsory jurisdiction in 1986 to accept the court's jurisdiction only on a case-by-case basis."
https://en.wikipedia.org/wiki/International_Court_of_Justice

I do agree on the point that it seems that the entities with the most guns make the rules, but Im not a 100% sure, I feel like it might be second to the entity with the most intelligence & money combined...