Ok? The ICC prosecutes war crimes in complementarity. The ICJ does not. Not sure what UN Security Council has to do with anything? I can't tell if this is AI. Add to your slop context you're probably thinking of IHL.
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.