Russians troops are working "round-the-clock" at new anti-aircraft missile system positions to defend against missile and air strikes by Ukraine, the Russian Interfax reported late on Sunday citing the defence ministry.
Crews of the S-300V systems were "mastering new position areas" of the Russian long range surface-to-air missile systems, the news agency reported, citing a ministry statement.
"The air defence units of the Western Military District continue to serve in the new position areas on combat duty around the clock," the agency cited the ministry as saying.
