And which any country can flout if it can hold enough things at risk. I'm not saying I don't believe in the corpus of international law you mention. Yet Putin is in Crimea. The Chinese are blatantly flouting UNCLOS in the SCS. Assad is dropping barrel bombs and chemical weapons on his own people. International law only has the force a strong state is willing to put behind it. Tell the dead in Rwanda, Darfur, or North Korea how "binding" the law against genocide is when the international community won't do shit about it because it's politically inconvenient.What is the "law of international relations?" Is that the same as the body of treaties which comprises international law, and which is binding upon signatories (including the U.S.)?
Is it right? Hell no. Some random Syrian or Iraqi has the same human rights as I do. But no one's willing to enforce his, because that's "nation-building" and a "quagmire" to the chattering classes. Binding law? Feh. Tell that to the people in the North Korean gulags.