18 April 2016, 09:50 GMT
MOSCOW (Sputnik) – The S-400 is Russia's next-generation air defense system, carrying three different types of missiles capable of destroying aerial targets at short-to-extremely long range. It is capable of tracking and destroying all existing aerial targets, including ballistics and cruise missiles.
"We've signed that agreement," Singh said.
When asked to give a date on the first deliveries of the defense system, Singh said, "It's hard to say, but as soon as possible."