At the end of the day if international law is good enough for Tel Aviv, Tehran, Riyadh, Damascus, and Khartoum can suck it up and cope with not being able to do genocide for sport whenever they have domestic problems like a normal society. Let Tehran dismantle its private militias, too.
No country can plead and snivel to be treated at peace that has multiple Condotierri it can gin up to shoot at a state allowed only to be shot at and not to shoot back while pleading for laws to protect but not bind it, and to bind but not protect Israel.
The Arab world has been doing this since the 1940s and Iran since the 1980s. I think international law *is* good, which is why I refuse to accept that the Middle Eastern conflict should remain frozen in a lopsided adherence to it only for some.
"We demand rigid protection of our borders and the right to send guerrillas to shoot up yours, which you cannot reply to because it embarrasses us when you can shoot and we can't" is not a realistic way to fight a war. Nobody's made the Arab world accept that even when it should.