وكان من أهم السباب التعثر هو التمويل و الانتاج المشترك
و رادار Irbis-E الروسي لي Su-35 أو AESA الصيني الذي ترغب فيه باكستان
Are they coming with their radar Irbis-E radar or with Chinese AESA radar as previously it was reported/ rumoured that Su-35 negotiations were failed because of this ....