Law is Law...If you stomp your feet over someone breaching one, why is it OK to break another?
Having an hypocracy is one thing, but to be blatantly biased and disingenuous is another.
I've seen the same people scream about UN resolutions for years, now they're looking the other way, because it suits them.
International "Law" I would consider differently. Their is no universally agreed governing body, nor should their be. That is the very definition of sovereignty , no higher authority.
The UN is a forum for debate, nothing more. International Law is still "law of the jungle" and should be.
If you want "laws" to govern your national government, then merge with another nation and make a new national government.