Russia and Turkey may shortly sign a contract on the delivery of the second regiment set of S-400 air defense missile systems, Head of Russia’s Federal Service for Military and Technical Cooperation Dmitry Shugayev said in an interview with the Rossiya-24 TV Channel on Monday. This reported by TASS.

"I believe we will conclude the second contract in the foreseeable future. It implies Turkish partners’ certain participation in the production process," Shugayev commented.

As he specified, the talks were on an additional batch. "We are at quite a serious stage and all the technical issues have been settled and so on," he explained.

According to Shugayev, this will be mutually advantageous cooperation without any damage to the Russian side. "We observe national interests," he stressed.

The first regiment set of S-400 air defense missile systems is already on the territory of Turkey and specialists have been trained to operate them, Shugayev highlighted. "The question now is when Turkey makes a decision on placing them on combat duty. This is their priority," he commented.