MOSCOW, July 4. /TASS/. Russia has received an official request from Serbia for supplies of S-300PMU-2 missile systems in 2021, a well-informed military diplomatic source told TASS.

"Serbia has sent an official request for the supplies of a regimental package of S-300PMU-2 that consists of a regimental command post and two missile battalions," he said. "At present, the relevant organizations of the Russian defense industry are examining the query."

"Given the relations of friendship between the two countries, there are scarcely any doubts Russia will answer the request positively," the source said.

In the meantime, officials at the Federal Service for Military-Technical Cooperation, which supervises international cooperation in defense-related technologies, and executives at Almaz-Antei corporation refrained from comments on the information from the source.

Vyacheslav Davidenko, an official spokesman from the Russian weaponry trading company Rosoboronexport told TASS the exporter had not received the query yet.

At the time of reporting, TASS did not have official comments from Serbia.

Serbian Prime Minister Alexander Vucic said in April 2017 his country would like to have two battalions and the command point of the Russian antiaircraft missile system S-300 Favorit. Somewhat earlier, he said S-300’s were overly expensive for Serbia but Russia had voiced its intention to help with the aid of definite arrangements.

S-300PMU-2 Favorit is an antiaircraft missile system with a capability for destroying targets at distances of up to 300 km and altitudes of up to 27 km.

S-300’s complexes have been exported in the past to Azerbaijan, Algeria, Iran, and China. According to media reports, Azerbaijan paid about $ 300 mln for two battalion complexes of S-300PMU-2 Favorit missiles.