Hate to break it to them, but the world already knew that.
Back in the 80’s.
Iraq and Iran dusted entire border towns into oblivion with chemical weapons.
What remained got bombed into rubble.
Add the minefields as garnish.
But Iran has had them weapons since at least the 80’s.
probably longer than that- not like there weren’t any wmd experienced german scientists working in Iran even under the shah