Denis Muryga, a purported member of the Aidar Battalion fighting as part of the Ukrainian armed forces who reportedly surrendered in the course of Russia-Ukraine conflict, attends a court hearing in Rostov-on-Don, Russia October 18, 2022. REUTERS/Sergey Pivovarov 

Denis Muryga, a purported member of the Aidar Battalion fighting as part of the Ukrainian armed forces who reportedly surrendered in the course of Russia-Ukraine conflict, speaks with his lawyer before a court hearing in Rostov-on-Don, Russia October 18, 2022. REUTERS/Sergey Pivovarov 

Denis Muryga, a purported member of the Aidar Battalion fighting as part of the Ukrainian armed forces who reportedly surrendered in the course of Russia-Ukraine conflict, is seen behind a glass wall of an enclosure for defendants during a court hearing in Rostov-on-Don, Russia October 18, 2022. REUTERS/Sergey Pivovarov 

Denis Muryga, a purported member of the Aidar Battalion fighting as part of the Ukrainian armed forces who reportedly surrendered in the course of Russia-Ukraine conflict, attends a court hearing in Rostov-on-Don, Russia October 18, 2022. REUTERS/Sergey Pivovarov 

Cadets attend an event marking the declared annexation of the Russian-controlled territories of four Ukraine's Donetsk, Luhansk, Kherson and Zaporizhzhia regions, after holding what Russian authorities called referendums in the occupied areas of Ukraine that were condemned by Kyiv and governments worldwide, in Rostov-on-Don, Russia, September 30, 2022. REUTERS/Sergei Pivovarov 

Cadets attend an event marking the declared annexation of the Russian-controlled territories of four Ukraine's Donetsk, Luhansk, Kherson and Zaporizhzhia regions, after holding what Russian authorities called referendums in the occupied areas of Ukraine that were condemned by Kyiv and governments worldwide, in Rostov-on-Don, Russia, September 30, 2022. REUTERS/Sergei Pivovarov 

Cadets attend an event marking the declared annexation of the Russian-controlled territories of four Ukraine's Donetsk, Luhansk, Kherson and Zaporizhzhia regions, after holding what Russian authorities called referendums in the occupied areas of Ukraine that were condemned by Kyiv and governments worldwide, in Rostov-on-Don, Russia, September 30, 2022. REUTERS/Sergei Pivovarov 

People attend an event marking the declared annexation of the Russian-controlled territories of four Ukraine's Donetsk, Luhansk, Kherson and Zaporizhzhia regions, after holding what Russian authorities called referendums in the occupied areas of Ukraine that were condemned by Kyiv and governments worldwide, in Rostov-on-Don, Russia, September 30, 2022. REUTERS/Sergei Pivovarov 

A voter demonstrates a ballot to journalists while casting it at a polling station located in the Don State Technical University on the second day of a referendum on the joining of Russian-controlled regions of Ukraine to Russia, in Rostov-on-Don, Russia September 24, 2022. A vote at the polling station was held for residents of the self-proclaimed Donetsk (DPR) and Lugansk People's Republics (LPR) - the Russian-controlled regions of Ukraine. REUTERS/Sergei Pivovarov 

People visit a polling station located in the Don State Technical University on the second day of a referendum on the joining of Russian-controlled regions of Ukraine to Russia, in Rostov-on-Don, Russia September 24, 2022. A vote at the polling station was held for residents of the self-proclaimed Donetsk (DPR) and Lugansk People's Republics (LPR) - the Russian-controlled regions of Ukraine. REUTERS/Sergei Pivovarov 

Voters visit a polling station located in the Don State Technical University on the second day of a referendum on the joining of Russian-controlled regions of Ukraine to Russia, in Rostov-on-Don, Russia September 24, 2022. A vote at the polling station was held for residents of the self-proclaimed Donetsk (DPR) and Lugansk People's Republics (LPR) - the Russian-controlled regions of Ukraine. REUTERS/Sergei Pivovarov 

People visit a polling station located in the Don State Technical University on the second day of a referendum on the joining of Russian-controlled regions of Ukraine to Russia, in Rostov-on-Don, Russia September 24, 2022. A vote at the polling station was held for residents of the self-proclaimed Donetsk (DPR) and Lugansk People's Republics (LPR) - the Russian-controlled regions of Ukraine. REUTERS/Sergei Pivovarov 

People visit a polling station located in the Don State Technical University on the second day of a referendum on the joining of Russian-controlled regions of Ukraine to Russia, in Rostov-on-Don, Russia September 24, 2022. A vote at the polling station was held for residents of the self-proclaimed Donetsk (DPR) and Lugansk People's Republics (LPR) - the Russian-controlled regions of Ukraine. REUTERS/Sergei Pivovarov 

Voters visit a polling station located in the Don State Technical University on the second day of a referendum on the joining of Russian-controlled regions of Ukraine to Russia, in Rostov-on-Don, Russia September 24, 2022. A vote at the polling station was held for residents of the self-proclaimed Donetsk (DPR) and Lugansk People's Republics (LPR) - the Russian-controlled regions of Ukraine. REUTERS/Sergei Pivovarov 

A voter casts a ballot at a polling station located in the Don State Technical University on the second day of a referendum on the joining of Russian-controlled regions of Ukraine to Russia, in Rostov-on-Don, Russia September 24, 2022. A vote at the polling station was held for residents of the self-proclaimed Donetsk (DPR) and Lugansk People's Republics (LPR) - the Russian-controlled regions of Ukraine. REUTERS/Sergei Pivovarov 

A voter casts a ballot at a polling station located in the Don State Technical University on the second day of a referendum on the joining of Russian-controlled regions of Ukraine to Russia, in Rostov-on-Don, Russia September 24, 2022. A vote at the polling station was held for residents of the self-proclaimed Donetsk (DPR) and Lugansk People's Republics (LPR) - the Russian-controlled regions of Ukraine. REUTERS/Sergei Pivovarov 

Voters visit a polling station located in the Don State Technical University on the second day of a referendum on the joining of Russian-controlled regions of Ukraine to Russia, in Rostov-on-Don, Russia September 24, 2022. A vote at the polling station was held for residents of the self-proclaimed Donetsk (DPR) and Lugansk People's Republics (LPR) - the Russian-controlled regions of Ukraine. REUTERS/Sergei Pivovarov 

Voters stand next to ballot boxes at a polling station located in the Don State Technical University on the second day of a referendum on the joining of Russian-controlled regions of Ukraine to Russia, in Rostov-on-Don, Russia September 24, 2022. A vote at the polling station was held for residents of the self-proclaimed Donetsk (DPR) and Lugansk People's Republics (LPR) - the Russian-controlled regions of Ukraine. REUTERS/Sergei Pivovarov 

Russian service members stand next to a mobile recruitment center for military service under contract in Rostov-on-Don, Russia September 17, 2022. REUTERS/Sergey Pivovarov 

A Russian service member stands next to a mobile recruitment center for military service under contract in Rostov-on-Don, Russia September 17, 2022. REUTERS/Sergey Pivovarov 

Newlyweds pose for a picture with Russian service members next to a mobile recruitment center for military service under contract in Rostov-on-Don, Russia September 17, 2022. REUTERS/Sergey Pivovarov 

Russian service members sit next to a mobile recruitment center for military service under contract in Rostov-on-Don, Russia September 17, 2022. REUTERS/Sergey Pivovarov 

A man poses for a picture with Russian service members next to a mobile recruitment center for military service under contract in Rostov-on-Don, Russia September 17, 2022. REUTERS/Sergey Pivovarov 

A female police officer stands with a dog next to a mobile recruitment center for military service under contract in Rostov-on-Don, Russia September 17, 2022. REUTERS/Sergey Pivovarov 

A Russian service member walks down the stairs of a mobile recruitment center for military service under contract in Rostov-on-Don, Russia September 17, 2022. REUTERS/Sergey Pivovarov 

Police officers patrol with dogs next to a mobile recruitment center for military service under contract in Rostov-on-Don, Russia September 17, 2022. REUTERS/Sergey Pivovarov 

Russian service members stand next to a mobile recruitment center for military service under contract in Rostov-on-Don, Russia September 17, 2022. REUTERS/Sergey Pivovarov 

A female police officer stands with a dog next to a mobile recruitment center for military service under contract in Rostov-on-Don, Russia September 17, 2022. REUTERS/Sergey Pivovarov 

Men visit a mobile recruitment center for military service under contract in Rostov-on-Don, Russia September 17, 2022. REUTERS/Sergey Pivovarov 

Russian service members sit next to a mobile recruitment center for military service under contract in Rostov-on-Don, Russia September 17, 2022. REUTERS/Sergey Pivovarov 

A Russian service member stands next to a mobile recruitment center for military service under contract in Rostov-on-Don, Russia September 17, 2022. REUTERS/Sergey Pivovarov 

A Russian service member stands next to a mobile recruitment center for military service under contract in Rostov-on-Don, Russia September 17, 2022. REUTERS/Sergey Pivovarov 

Russian service members stand next to a mobile recruitment center for military service under contract in Rostov-on-Don, Russia September 17, 2022. REUTERS/Sergey Pivovarov 

A Russian service member stands next to a mobile recruitment center for military service under contract in Rostov-on-Don, Russia September 17, 2022. REUTERS/Sergey Pivovarov 

Officers of Russia's Federal Security Service escort Denis Nuryga, a purported member of the Aidar Battalion under the Ukrainian armed forces who reportedly surrendered in the course of Ukraine-Russia conflict, inside a court house in Rostov-on-Don, Russia May 19, 2022. REUTERS/Sergey Pivovarov 

Officers of Russia's Federal Security Service escort Denis Nuryga, a purported member of the Aidar Battalion under the Ukrainian armed forces who reportedly surrendered in the course of Ukraine-Russia conflict, inside a court house in Rostov-on-Don, Russia May 19, 2022. REUTERS/Sergey Pivovarov 

Officers of Russia's Federal Security Service escort Denis Nuryga, a purported member of the Aidar Battalion under the Ukrainian armed forces who reportedly surrendered in the course of Ukraine-Russia conflict, inside a court house in Rostov-on-Don, Russia May 19, 2022. REUTERS/Sergey Pivovarov 

Russian service members wash combat vehicles with the symbol "Z" on their sides, painted in support of Russia's armed forces involved in a conflict in Ukraine, before a military parade on Victory Day, which marks the 77th anniversary of the victory over Nazi Germany in World War Two, in Rostov-on-Don, Russia May 9, 2022. REUTERS/Sergey Pivovarov 

A Russian service member looks out of a combat vehicle with the symbol "Z" on its side, painted in support of Russia's armed forces involved in a conflict in Ukraine, before a military parade on Victory Day, which marks the 77th anniversary of the victory over Nazi Germany in World War Two, in Rostov-on-Don, Russia May 9, 2022. REUTERS/Sergey Pivovarov 

Russian service members wash an all-terrain armoured vehicle with the symbol "Z" on its front side, painted in support of Russia's armed forces involved in a conflict in Ukraine, before a military parade on Victory Day, which marks the 77th anniversary of the victory over Nazi Germany in World War Two, in Rostov-on-Don, Russia May 9, 2022. REUTERS/Sergey Pivovarov 

Russian service members salute atop of combat vehicles with the symbol "Z" on their front sides, painted in support of Russia's armed forces involved in a conflict in Ukraine, during a military parade on Victory Day, which marks the 77th anniversary of the victory over Nazi Germany in World War Two, in Rostov-on-Don, Russia May 9, 2022. REUTERS/Sergey Pivovarov 

A view shows Russian combat vehicles with the symbol "Z" on their front sides, painted in support of Russia's armed forces involved in a conflict in Ukraine, during a military parade on Victory Day, which marks the 77th anniversary of the victory over Nazi Germany in World War Two, in Rostov-on-Don, Russia May 9, 2022. REUTERS/Sergey Pivovarov 

Participants carry flags and portraits of people, including Red Army soldiers, during the Immortal Regiment march on Victory Day, which marks the 77th anniversary of the victory over Nazi Germany in World War Two, in Rostov-on-Don, Russia May 9, 2022. REUTERS/Sergey Pivovarov 

Russian service members take part in a military parade on Victory Day, which marks the 77th anniversary of the victory over Nazi Germany in World War Two, in Rostov-on-Don, Russia May 9, 2022. REUTERS/Sergey Pivovarov 

A view shows Russian combat vehicles with the symbol "Z", painted on their sides in support of Russia's armed forces involved in a conflict in Ukraine, during a military parade on Victory Day, which marks the 77th anniversary of the victory over Nazi Germany in World War Two, in Rostov-on-Don, Russia May 9, 2022. REUTERS/Sergey Pivovarov 

A view shows Russian infantry fighting vehicles with the symbol "Z", painted on their sides in support of Russia's armed forces involved in a conflict in Ukraine, during a military parade on Victory Day, which marks the 77th anniversary of the victory over Nazi Germany in World War Two, in Rostov-on-Don, Russia May 9, 2022. REUTERS/Sergey Pivovarov 

A view shows a Russian BTR-82A armoured personnel carrier during a military parade on Victory Day, which marks the 77th anniversary of the victory over Nazi Germany in World War Two, in Rostov-on-Don, Russia May 9, 2022. REUTERS/Sergey Pivovarov 

A view shows Russian multiple launch rocket systems with the symbol "Z", painted on their sides in support of Russia's armed forces involved in a conflict in Ukraine, during a military parade on Victory Day, which marks the 77th anniversary of the victory over Nazi Germany in World War Two, in Rostov-on-Don, Russia May 9, 2022. REUTERS/Sergey Pivovarov 

An Orthodox priest sprinkles holy water on boxes with traditional Easter cakes, baked for the Russian military involved in a conflict in Ukraine, before the departure of a plane at an aerodrome in Rostov-on-Don, Russia April 21, 2022. REUTERS/Sergey Pivovarov 

An Orthodox priest sprinkles holy water on traditional Easter cakes, baked for the Russian military involved in a conflict in Ukraine, before the departure of a plane at an aerodrome in Rostov-on-Don, Russia April 21, 2022. REUTERS/Sergey Pivovarov 

A Russian army service member wounded during Ukraine-Russia conflict attends a concert at a military hospital in Rostov-on-Don, Russia March 26, 2022. REUTERS/Sergey Pivovarov 

A Russian army service member wounded during Ukraine-Russia conflict walks with crutches outside a military hospital in Rostov-on-Don, Russia March 26, 2022. REUTERS/Sergey Pivovarov 

Spectators attend a concert for Russian army service members wounded during Ukraine-Russia conflict and medical specialists at a military hospital in Rostov-on-Don, Russia March 26, 2022. REUTERS/Sergey Pivovarov 

Russian army service members wounded during Ukraine-Russia conflict talk outside a military hospital in Rostov-on-Don, Russia March 26, 2022. REUTERS/Sergey Pivovarov 

Russian army service members wounded during Ukraine-Russia conflict attend a concert at a military hospital in Rostov-on-Don, Russia March 26, 2022. REUTERS/Sergey Pivovarov 

A Russian army service member wounded during Ukraine-Russia conflict walks at a military hospital in Rostov-on-Don, Russia March 26, 2022. REUTERS/Sergey Pivovarov 

A Russian army service member wounded during Ukraine-Russia conflict attends a concert at a military hospital in Rostov-on-Don, Russia March 26, 2022. REUTERS/Sergey Pivovarov 

Russian army service members wounded during Ukraine-Russia conflict attend a concert at a military hospital in Rostov-on-Don, Russia March 26, 2022. REUTERS/Sergey Pivovarov 

A customer shops in IKEA store in Rostov-on-Don, Russia March 3, 2022. REUTERS/REUTERS PHOTOGRAPHER 

Customers shop in IKEA store in Rostov-on-Don, Russia March 3, 2022. REUTERS/REUTERS PHOTOGRAPHER