If a Wikipedia link with multiple good sources already in the introduction isn't enough for someone without a clue on a subject, I should have left the discussion.
My personal heuristic to avoid grief in the future: Don't discuss with anyone that dismiss Wikipedia without references... no, without having primary sources for references.
Thank you for that. The net and HN will be better for me.
(Edit: The UN and the UN Security council make resolutions all the time. I doubt a majority are followed. :-) E.g. http://articles.latimes.com/2002/oct/17/world/fg-resolution1... )
Your wikipedia link doesn't cover the UN resolution, nor does the citation, which appears to be ICRC's commentary of the treaty. The article you linked does assert it, but without any significant support aside from the ICRC's commentary.
I'm glad I could help.
First, no. You asserted it repeatedly without a compelling reference. Ptaipale provided a verifiable claim about the UN Security Council affirming that this had become international law. You linked to an article that happened to make a similar claim but had no reference to the UN Security Council decision (nor does the citation it references so far as I can see).
Second, I admitted a gap in my knowledge and your response was to come in and assert that you told me the same earlier (which you actually didn't). If the point of your arguing was to educate, this is a really poor technique. Don't respond to someone acknowledging a mistake/misunderstanding/knowlege gap by trying to make it about how "right" you are. It comes off as petty.