About ten countries display their interest in buying Russian-made S-400 medium-to-long range air defense systems, Director of Russia’s Federal Service for Military-Technical Cooperation Dmitry Shugayev said in an interview with the RBC media group on Tuesday. This reported by TASS.

"About ten countries show their keen interest," the defense official said.

The procedure of signing a contract for the purchase of S-400 anti-aircraft missile systems to foreign customers is a multi-stage and complex process, Shugayev explained.

This procedure requires taking into account all possible terms and details of a potential delivery, available capacities in industry for the fulfillment of defense procurement plans that remain a priority, he specified.

"Therefore, ten requests do not mean ten countries ready to sign a contract," the defense official said.

The head of Russia’s Federal Service for Military-Technical Cooperation said that he did not see any obstacles for the potential deliveries of S-400 air defense systems to Belarus.