MOSCOW (REUTERS) - Moscow is unlikely to deliver a shipment of S-300 anti-aircraft missiles to Syria before the autumn, an arms industry source told the Russian news agency Interfax on Friday.

The source also indicated the timing of the delivery of the arms, which has alarmed Western governments, would depend on the development of the situation in Syria.

The head of Russian aircraft maker MiG said separately that Russia was counting on providing Syria with 10 MiG-29 fighter planes, and was discussing details with a Syrian delegation, RIA news agency said.