Russia to start delivery of S-500 air defense system 'ahead of schedule'
Advanced system is reportedly able to intercept missiles in space.
Russian servicemen drive S-400 missile air defense systems during the Victory Day parade, marking the 73rd anniversary of the victory over Nazi Germany in World War Two, at Red Square in Moscow, Russia May 9, 2018(photo credit: REUTERS/SERGEI KARPUKHIN)ByANNA AHRONHEIM
