In the eighties when Iran was fighting with Iraq, and there was an embargo against it, Iran had great difficulties to find spares and ammunition for its american made planes.
An offer came from - you will never believe this one - Vietnam! They had a handful USA planes left , captured in the last days of the fall of the Southvietnamese regime in 1975. The vietnamese airforce relied completely on its soviet equipment and couldn't do anything with the USA stuff.
Eventually the sale didn't go through. The planes were not the kind that Iran needed.
I think there were Cessna Dragonfly with it, almost new and ready to go.
The movie "Hamble be H-3" refers to a raid conducted by 8 Iranian F4s in 1981 against the main Iraqi medium bombers near the Syrian border(T16 & T22). The raid resulted in the destruction of most of the Iraqi medium bomber fleet. What the movie did not say, is that the planes landed in Syria after the raid to refuel and appeared again over Iraq on its way back to Iran. The Iranian A.F. figured that the planes flying in pairs in close formation were hardest to detect by the Iraqi air defences.