I wouldn't be so sure about that. He obviously has moles within both State and Defense. His remarks need to be carefully reviewed by the CIA and if he has in fact shared any classified info he needs to be hung by the nuts.
There are all kinds of war game scenarios done in the Pentagon all the time. Hersh doesn't know anything that isn't common knowledge. So Iran is on the list of nations where war gamming exists: big deal.
Any State Department "mole" isn't going to be any more helpful than a NY Times reporter speculating on what the Oval Office is considering.
Now if Hersh gets his hands on any classified material, both he and the leaker would need to face the consequence of such actionable material.