Can’t happen.Serbia is also a good customer.
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Vucic had some interesting commentary on choosing Rafale over Chinese or Russian fighter aircraft. Apparently transportation for potentially offensive armament is difficult through NATO territory. J-10 is an excellent fighter from tech specs standpoint but there is almost no chance of it getting delivered to Serbia.
It is becoming readily apparent why the Y-20s were packing flares/chaff when deliviery FK-3 to Serbia...