The Times on 8th January reported that a deal to sell Sukhoi airliners to Iran has fallen through because the aircraft have so many American parts that they require a US export licence. The airlines are said to be delaying purchase of the Superjets while trying to reduce the percentage of American components from 22% to below 10%. US components include including fire detection, auxiliary power units and electrical systems.
https://www.thetimes.co.uk/article/russian-jets-are-too-american-for-iran-l7627sjkn
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