The right play is to survive. In a full scale war with no holds barred Iran loses because the US takes out their infrastructure piece by piece until they really are reduced to the stone age. At that point the missile factories have no power, no new parts, and the stockpile is dimished permanantly with each attack. Perhaps they can destroy Israel before they're totally depleted, but once out of missiles and drones they're finished, rulers of a blasted wasteland. The only reason this is unlikely is that Trump might be removed from office if he attempted it.