TOPSHOT - Russian Su-25 fighter jets launch rockets during military exercises at the Prudboy range in Volgograd region, Southern Russia on September 24, 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)

TOPSHOT - Russian army tanks and armored personnel carriers take part in military exercises at the Prudboy range in Volgograd region, Southern Russia on September 24, 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)

Russian Su-25 fighter jets launch rockets during military exercises at the Prudboy range in Volgograd region, Southern Russia on September 24, 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)

Russian Su-25 fighter jets launch rockets during military exercises at the Prudboy range in Volgograd region, Southern Russia on September 24, 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)

Russian military helicopters launch rockets during military exercises at the Prudboy range in Volgograd region, Southern Russia on September 24, 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)

Russian army tanks and armored personnel carriers take part in military exercises at the Prudboy range in Volgograd region, Southern Russia on September 24, 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)

Russian army tanks and armored personnel carriers take part in military exercises at the Prudboy range in Volgograd region, Southern Russia on September 24, 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)

Russian army tanks and armored personnel carriers take part in military exercises at the Prudboy range in Volgograd region, Southern Russia on September 24, 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)

Russian army tanks and armored personnel carriers take part in military exercises at the Prudboy range in Volgograd region, Southern Russia on September 24, 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)

Russian army tanks and armored personnel carriers take part in military exercises at the Prudboy range in Volgograd region, Southern Russia on September 24, 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)

This picture shows smoke rising during military exercises at the Prudboy range in Volgograd region, Southern Russia on September 24, 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)

Russian Army officers lead military exercises at the Prudboy range in Volgograd region, Southern Russia on September 24, 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)

A Russian Army officer walks through dust during military exercises at the Prudboy range in Volgograd region, Southern Russia on September 24, 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)

A Russian Army officer walks through dust during military exercises at the Prudboy range in Volgograd region, Southern Russia on September 24, 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)

Russian Army servicemen take part in military exercises at the Prudboy range in Volgograd region, Southern Russia on September 24, 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)

Russian Army servicemen look at a T-72-B3 main battle tank during military exercises at the Prudboy range in Volgograd region, Southern Russia on September 24, 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)

A Russian Army T-72-B3 main battle tank moves through the dust during military exercises at the Prudboy range in Volgograd region, Southern Russia on September 24, 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)

A Russian Army officer walks through dust during military exercises at the Prudboy range in Volgograd region, Southern Russia on September 24, 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)

A Russian soldier stands on a road during military exercises at the Prudboy range in Volgograd region, Southern Russia on September 24, 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)

TOPSHOT - A Russian army T-72-B3 tank fires during military exercises at the Raevsky range in Southern Russia on September 23, 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)

TOPSHOT - A Russian army Mi-28 helicopter launches rockets during military exercises at the Raevsky range in Southern Russia on September 23, 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)

Russian army Mi-24 helicopters fly above a warship at the Turali range on the Caspian Sea coast in the Republic of Dagestan in Southern Russia on September 23, 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)

Russian army paratroopers descend to the ground at the Turali range on the Caspian Sea coast in the Republic of Dagestan in Southern Russia on September 23, 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)

Russian army armored personnel carriers are seen at the Turali range on the Caspian Sea coast in the Republic of Dagestan in Southern Russia on September 23, 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)

Russian army armored personnel carriers are seen at the Turali range on the Caspian Sea coast in the Republic of Dagestan in Southern Russia on September 23, 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)

Rockets launch from missile systems at the Turali range on the Caspian Sea coast in the Republic of Dagestan in Southern Russia on September 23, 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)

Russian cadets watch maneuvers at the Turali range on the Caspian Sea coast in the Republic of Dagestan in Southern Russia on September 23, 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)

A Russian army Mi-28 helicopter launches rockets during military exercises at the Raevsky range in Southern Russia on September 23, 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)

A Russian army T-72-B3 tank fires during military exercises at the Raevsky range in Southern Russia on September 23, 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)

A Russian army T-72-B3 tank fires during military exercises at the Raevsky range in Southern Russia on September 23, 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)

A Russian army Mi-28 helicopter launches rockets during military exercises at the Raevsky range in Southern Russia on September 23, 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)

Russian servicemen take part in military exercises at the Raevsky range in Southern Russia on September 23, 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)

Russian servicemen take part in military exercises at the Raevsky range in Southern Russia on September 23, 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)

Russian servicemen take part in military exercises at the Raevsky range in Southern Russia on September 23, 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)

Russian army armored personnel carriers are seen at the Raevsky range in Southern Russia on September 23, 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)

Russian army armored personnel carriers are seen at the Raevsky range in Southern Russia on September 23, 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)

TOPSHOT - 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)

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)

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)

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)

A rocket launches from a Pantsir-S air defense 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)

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)

Russian fighter jets drop bombs over 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)

Russian fighter jets drop bombs over 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)

Russian fighter jets drop bombs over 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)

Russian fighter jets fly over 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)

Russian fighter jets fly over 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)

Smoke rises after an airstrike by Russian fighter jets 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)