People carry candles past the "The Motherland Calls" monument illuminated in red during a ceremony to mark the 80th anniversary of German invasion into Soviet Union at the Mamayev Kurgan World War Two memorial complex in Volgograd, Russia June 21, 2021. Picture taken with slow shutter speed. Picture taken June 21, 2021. REUTERS/Kirill Braga TPX IMAGES OF THE DAY

"The Motherland Calls" monument is illuminated in red during a ceremony to mark the 80th anniversary of German invasion into Soviet Union at the Mamayev Kurgan World War Two memorial complex in Volgograd, Russia June 21, 2021. Picture taken June 21, 2021 with a drone. REUTERS/Kirill Braga

"The Motherland Calls" monument is illuminated in red during a ceremony to mark the 80th anniversary of German invasion into Soviet Union at the Mamayev Kurgan World War Two memorial complex in Volgograd, Russia June 21, 2021. Picture taken June 21, 2021. REUTERS/Kirill Braga

"The Motherland Calls" monument is illuminated in red during a ceremony to mark the 80th anniversary of German invasion into Soviet Union at the Mamayev Kurgan World War Two memorial complex in Volgograd, Russia June 21, 2021. Picture taken June 21, 2021. REUTERS/Kirill Braga

"The Motherland Calls" monument is illuminated in red during a ceremony to mark the 80th anniversary of German invasion into Soviet Union at the Mamayev Kurgan World War Two memorial complex in Volgograd, Russia June 21, 2021. Picture taken June 21, 2021 with a drone. REUTERS/Kirill Braga

People listen to a street musician as projection of arms with a candle to mark the 80th anniversary of German invasion into Soviet Union is seen in the background on the Troitsky bridge in Saint Petersburg, Russia June 22, 2021. REUTERS/Maxim Shemetov

People light candles to mark the 80th anniversary of German invasion into Soviet Union in Saint Petersburg, Russia June 22, 2021. REUTERS/Maxim Shemetov

People listen to a street musician as projection of arms with a candle to mark the 80th anniversary of German invasion into Soviet Union is seen in the background on the Troitsky bridge in Saint Petersburg, Russia June 22, 2021. REUTERS/Maxim Shemetov

People listen to a street musician as projection of arms with a candle to mark the 80th anniversary of German invasion into Soviet Union is seen in the background on the Troitsky bridge in Saint Petersburg, Russia June 22, 2021. REUTERS/Maxim Shemetov

People light candles to mark the 80th anniversary of German invasion into Soviet Union in Saint Petersburg, Russia June 22, 2021. REUTERS/Maxim Shemetov

People light candles to mark the 80th anniversary of German invasion into Soviet Union in Saint Petersburg, Russia June 22, 2021. REUTERS/Maxim Shemetov TPX IMAGES OF THE DAY

Actors of Ivano-Frankivsk drama theatre perform during the "Romeo and Juliet" play staged in the industrial halls of an old Soviet factory in Ivano-Frankivsk, Ukraine May 29, 2021. Picture taken May 29, 2021. REUTERS/Sergei Karazy

An actor of Ivano-Frankivsk drama theatre performs during the "Romeo and Juliet" play staged in the industrial halls of an old Soviet factory in Ivano-Frankivsk, Ukraine May 29, 2021. Picture taken May 29, 2021. REUTERS/Sergei Karazy

Spectators watch the "Romeo and Juliet" play staged by Ivano-Frankivsk drama theatre in the industrial halls of an old Soviet factory in Ivano-Frankivsk, Ukraine May 29, 2021. Picture taken May 29, 2021. REUTERS/Sergei Karazy

An actor of Ivano-Frankivsk drama theatre performs during the "Romeo and Juliet" play staged in the industrial halls of an old Soviet factory in Ivano-Frankivsk, Ukraine May 29, 2021. Picture taken May 29, 2021. REUTERS/Sergei Karazy

Actors of Ivano-Frankivsk drama theatre perform during the "Romeo and Juliet" play staged in the industrial halls of an old Soviet factory in Ivano-Frankivsk, Ukraine May 29, 2021. Picture taken May 29, 2021. REUTERS/Sergei Karazy TPX IMAGES OF THE DAY

Spectators watch the "Romeo and Juliet" play staged by Ivano-Frankivsk drama theatre in the industrial halls of an old Soviet factory in Ivano-Frankivsk, Ukraine May 29, 2021. Picture taken May 29, 2021. REUTERS/Sergei Karazy

An actor of Ivano-Frankivsk drama theatre performs during the "Romeo and Juliet" play staged in the industrial halls of an old Soviet factory in Ivano-Frankivsk, Ukraine May 29, 2021. Picture taken May 29, 2021. REUTERS/Sergei Karazy

A participant prepares his Soviet-era Moskvich 407, 1958 release vintage car during the OldCarLand festival including about 700 vintage and rare vehicles, at a compound of the National Aviation Museum in Kyiv, Ukraine May 28, 2021. REUTERS/Gleb Garanich

Visitors look at a Soviet-era Chaika vintage car during the OldCarLand festival including about 700 vintage and rare vehicles, at a compound of the National Aviation Museum in Kyiv, Ukraine May 28, 2021. REUTERS/Gleb Garanich

Soviet-era vintage cars are seen during the OldCarLand festival including about 700 vintage and rare vehicles, at a compound of the National Aviation Museum in Kyiv, Ukraine May 28, 2021. REUTERS/Gleb Garanich

A visitor views a Soviet-era Moskvich 407, 1958 release vintage car during the OldCarLand festival including about 700 vintage and rare vehicles, at a compound of the National Aviation Museum in Kyiv, Ukraine May 28, 2021. REUTERS/Gleb Garanich

A visitor takes a picture of a Soviet-era Volga GAZ-21 vintage car during the OldCarLand festival including about 700 vintage and rare vehicles, at a compound of the National Aviation Museum in Kyiv, Ukraine May 28, 2021. REUTERS/Gleb Garanich

People gather to mark Victory Day and the 76th anniversary of the end of World War Two, at the Soviet War Memorial at Treptower Park in Berlin, Germany May 9, 2021. REUTERS/Christian Mang

A boy stands next to a World War Two memorial, with a Soviet flag seen in the foreground, during the celebrations of Victory Day, which marks the 76th anniversary of the victory over Nazi Germany, in Tomsk, Russia May 9, 2021. REUTERS/Taisiya Vorontsova

A person waves a Soviet flag as Russian Yars intercontinental ballistic missile systems drive along a street during a military parade on Victory Day, which marks the 76th anniversary of the victory over Nazi Germany in World War Two, in central Moscow, Russia May 9, 2021. REUTERS/Artem Mikryukov

People gather to mark Victory Day and the 76th anniversary of the end of World War Two, at the Soviet War Memorial at Treptower Park in Berlin, Germany May 9, 2021. REUTERS/Christian Mang

People gather to mark Victory Day and the 76th anniversary of the end of World War Two, at the Soviet War Memorial at Treptower Park in Berlin, Germany May 9, 2021. REUTERS/Christian Mang

Participants hold portraits during the Immortal Regiment march on Victory Day, which marks the 76th anniversary of the victory over Nazi Germany in World War Two, in the rebel-controlled city of Donetsk, Ukraine May 9, 2021. One of the participants holds a portrait of Soviet leader Joseph Stalin. REUTERS/Alexander Ermochenko

A militant of the self-proclaimed Donetsk People's Republic holds a portrait of Soviet leader Joseph Stalin during the Immortal Regiment march on Victory Day, which marks the 76th anniversary of the victory over Nazi Germany in World War Two, in the rebel-controlled city of Donetsk, Ukraine May 9, 2021. REUTERS/Alexander Ermochenko

Leonid Berezin, who survived the siege of Leningrad during Second World War dances at the Soviet War Memorial at Strasse des 17 Juni, on the 76th anniversary of the end of World War Two, in Berlin, Germany May 9, 2021. REUTERS/Christian Mang

Russian service members drive T-34 Soviet-era tanks during a military parade on Victory Day, which marks the 76th anniversary of the victory over Nazi Germany in World War Two, in Red Square in central Moscow, Russia May 9, 2021. REUTERS/Maxim Shemetov

Members of the motorcycling club "Night Wolves" arrive to mark Victory Day and the 76th anniversary of the end of World War Two, at the Soviet War Memorial at Strasse des 17 Juni in Berlin, Germany May 9, 2021. REUTERS/Christian Mang

Members of the motorcycling club "Night Wolves" lay wreaths to mark Victory Day and the 76th anniversary of the end of World War Two, at the Soviet War Memorial at Strasse des 17 Juni in Berlin, Germany May 9, 2021. REUTERS/Christian Mang

Members of the motorcycling club "Night Wolves" arrive to mark Victory Day and the 76th anniversary of the end of World War Two, at the Soviet War Memorial at Strasse des 17 Juni in Berlin, Germany May 9, 2021. REUTERS/Christian Mang

A man holds a Soviet flag to mark Victory Day and the 76th anniversary of the end of World War Two, at the Soviet War Memorial at Strasse des 17 Juni in Berlin, Germany May 9, 2021. REUTERS/Christian Mang

Members of the motorcycling club "Night Wolves" arrive to lay wreaths to mark Victory Day and the 76th anniversary of the end of World War Two, at the Soviet War Memorial at Treptower Park in Berlin, Germany May 9, 2021. REUTERS/Christian Mang

Members of the motorcycling club "Night Wolves" arrive to lay wreaths to mark Victory Day and the 76th anniversary of the end of World War Two, at the Soviet War Memorial at Treptower Park in Berlin, Germany May 9, 2021. REUTERS/Christian Mang

Members of the motorcycling club "Night Wolves" arrive to lay wreaths to mark Victory Day and the 76th anniversary of the end of World War Two, at the Soviet War Memorial at Treptower Park in Berlin, Germany May 9, 2021. REUTERS/Christian Mang

Members of the motorcycling club "Night Wolves" lay wreaths to mark Victory Day and the 76th anniversary of the end of World War Two, at the Soviet War Memorial at Treptower Park in Berlin, Germany May 9, 2021. REUTERS/Christian Mang

Members of the motorcycling club "Night Wolves" lay wreaths to mark Victory Day and the 76th anniversary of the end of World War Two, at the Soviet War Memorial at Treptower Park in Berlin, Germany May 9, 2021. REUTERS/Christian Mang

Members of the motorcycling club "Night Wolves" arrive to lay wreaths to mark Victory Day and the 76th anniversary of the end of World War Two, at the Soviet War Memorial at Treptower Park in Berlin, Germany May 9, 2021. REUTERS/Christian Mang

Members of the motorcycling club "Night Wolves" arrive to mark Victory Day and the 76th anniversary of the end of World War Two, at the Soviet War Memorial at Treptower Park in Berlin, Germany May 9, 2021. REUTERS/Christian Mang

Members of the motorcycling club "Night Wolves" pose as they arrive to mark Victory Day and the 76th anniversary of the end of World War Two, at the Soviet War Memorial at Treptower Park in Berlin, Germany May 9, 2021. REUTERS/Christian Mang

Members of the motorcycling club "Night Wolves" arrive to mark Victory Day and the 76th anniversary of the end of World War Two, at the Soviet War Memorial at Treptower Park in Berlin, Germany May 9, 2021. REUTERS/Christian Mang

Members of the motorcycling club "Night Wolves" arrive to mark Victory Day and the 76th anniversary of the end of World War Two, at the Soviet War Memorial at Treptower Park in Berlin, Germany May 9, 2021. REUTERS/Christian Mang

T-34 Soviet-era tank drive along Red Square during a military parade on Victory Day, which marks the 76th anniversary of the victory over Nazi Germany in World War Two, in central Moscow, Russia May 9, 2021. REUTERS/Maxim Shemetov

Members of the motorcycling club "Night Wolves" arrive to lay wreaths to mark Victory Day and the 76th anniversary of the end of World War Two, at the Soviet War Memorial at Treptower Park in Berlin, Germany May 9, 2021. REUTERS/Christian Mang

A T-34 Soviet-era tank drives along Red Square during a military parade on Victory Day, which marks the 76th anniversary of the victory over Nazi Germany in World War Two, in central Moscow, Russia May 9, 2021. REUTERS/Maxim Shemetov

A person carries flowers as people walk at the Soviet War Memorial at Treptower Park, to mark Victory Day and the 76th anniversary of the end of World War Two, in Berlin, Germany May 8, 2021. REUTERS/Christian Mang

People sit at the Soviet War Memorial at Treptower Park, on the Victory Day and the 76th anniversary of the end of World War Two, in Berlin, Germany May 8, 2021. REUTERS/Christian Mang

People walk at the Soviet War Memorial at Treptower Park, to mark Victory Day and the 76th anniversary of the end of World War Two, in Berlin, Germany May 8, 2021. REUTERS/Christian Mang

Flowers are seen at the Soviet War Memorial at Treptower Park, to mark Victory Day and the 76th anniversary of the end of World War Two, in Berlin, Germany May 8, 2021. REUTERS/Christian Mang

A participant holds a flag with an image of Soviet leader Joseph Stalin at the World War Two memorial Savur-Mohyla (Saur-Mogila) damaged in a recent conflict between the armed forces of Ukraine and pro-Russian rebels during a commemoration ceremony on the eve of Victory Day, which marks the 76th anniversary of the victory over Nazi Germany, in Donetsk Region, Ukraine May 8, 2021. REUTERS/Alexander Ermochenko

T-34 Soviet-era tanks drive during a rehearsal for the Victory Day parade, which marks the anniversary of the victory over Nazi Germany in World War Two, in Red Square in central Moscow, Russia May 7, 2021. REUTERS/Evgenia Novozhenina

Russian servicemen drive T-34 Soviet-era tanks during a rehearsal for the Victory Day parade, which marks the anniversary of the victory over Nazi Germany in World War Two, in Red Square in central Moscow, Russia May 7, 2021. REUTERS/Evgenia Novozhenina

T-34 Soviet-era tanks drive during a rehearsal for the Victory Day parade, which marks the anniversary of the victory over Nazi Germany in World War Two, in Red Square in central Moscow, Russia May 7, 2021. REUTERS/Maxim Shemetov

Russian Tu-160 Supersonic Bomber and Su-35 jet fighters fly in formation past a monument to Soviet cosmonaut Yuri Gagarin during a rehearsal for the Victory Day parade, which marks the anniversary of the victory over Nazi Germany in World War Two, in Moscow, Russia May 7, 2021. REUTERS/Tatyana Makeyeva