Why a larger Iranian arsenal still faces wartime supply problems

How would completing the Shah's pre-revolution arms orders change the balance of the Iran-Iraq War?

Iran would gain firepower and probably impose higher costs on Iraq, but isolation from suppliers and spare parts would limit the effect on the war's overall outcome.

Completing the Shah's outstanding orders would give Iran more firepower, particularly in the air. The revolutionary government would still be cut off from the original suppliers of that equipment and its replacement parts. A larger initial inventory would therefore coexist with the same difficulty sustaining it through the war. Iraq would probably expend more resources against that stronger force. It remains doubtful that the additional deliveries would greatly change the war's overall course or outcome.