...what? What does the UN have to do with war crimes lol. And why would the US care about war crimes we literally aren't signatory to the Rome statute. how could your comment get so many things wrong in so little text.
We all know why: 99.99% of warcrimes on Iranian territory were committed by Iran's islamist regime.
So Rome statute warcrimes are a legal impossibility in Iran. The Rome statute, that law and that definition of warcrime does not apply to anything happening in Iran.