Russia has finished the second stage of deliveries of a regiment set of S-400 air defense missile systems by transport planes to Turkey as envisaged by the contract, the Russian defense ministry said on Sunday. This reported by TASS.

"On September 15, 2019, as part of the implementation of contract liabilities, Russian military transport planes finished the second stage of deliveries of components of the S-400 air defense missile system to Turkey," the ministry said.

Turkey’s defense ministry reported the completion of the second phase earlier.

The first reports about the talks between Russia and Turkey on the deliveries of S-400 air defense missile systems emerged in November 2016. Russia confirmed in September 2017 that the relevant contract worth $2.5 billion had been signed. Under the contract, Ankara will get a regiment set of S-400 air defense missile systems (two battalions). The deal also envisages partial transfer of production technology to the Turkish side.

Deliveries began on July 12. During the first stage, from July 12 to July 25, 30 military transport planes delivered S-400 components to Turkey’s Muret airbase. The second stage began on August 27.