A rocket launches from a S-400 missile system at the Ashuluk military base in Southern Russia on September 22, 2020 during the "Caucasus-2020" military drills gathering China, Iran, Pakistan and Myanmar troops, along with ex-Soviet Armenia, Azerbaijan and Belarus. - Up to 250 tanks and around 450 infantry combat vehicles and armoured personnel carriers will take part in the September 21 to 26 land and naval exercises that will involve 80,000 people including support staff. (Photo by Dimitar DILKOFF / AFP)