TOPSHOT - Maintenance workers clean the monument of Soviet cosmonaut Yuri Gagarin in Moscow on April 9, 2021. - Sixty years ago Soviet cosmonaut Yuri Gagarin became the first person in space, marking it a new chapter in the history of space exploration. (Photo by Natalia KOLESNIKOVA / AFP)

A worker cleans the bust of Yuri Gagarin, the first person who flew to space, ahead of Cosmonautics Day celebrated on April 12, with the Heroes of the Soviet Space Program monument in the background, in Moscow, Russia, Friday, April 9, 2021. Russia on Monday marks the 60th anniversary of Gagarin's pioneering mission on April 12 1961, the first human flight to orbit that opened the space era. (AP Photo/Alexander Zemlianichenko)

A worker cleans the bust of Yuri Gagarin, the first person who flew to space, ahead of Cosmonautics Day celebrated on April 12, with the Heroes of the Soviet Space Program monument in the background, in Moscow, Russia, Friday, April 9, 2021. Russia on Monday marks the 60th anniversary of Gagarin's pioneering mission on April 12 1961, the first human flight to orbit that opened the space era. (AP Photo/Alexander Zemlianichenko)

Municipal workers clean the bas-relief of Yuri Gagarin, the first person who flew to space, ahead of Cosmonautics Day celebrated on April 12, on the Heroes of the Soviet Space Program monument in Moscow, Russia, Friday, April 9, 2021. Russia on Monday marks the 60th anniversary of Gagarin's pioneering mission on April 12 1961, the first human flight to orbit that opened the space era. (AP Photo/Alexander Zemlianichenko)

Municipal worker clean the bas-relief of Yuri Gagarin, the first person who flew to space, ahead of Cosmonautics Day celebrated on April 12, on the Heroes of the Soviet Space Program monument, in Moscow, Russia, Friday, April 9, 2021. Russia on Monday marks the 60th anniversary of Gagarin's pioneering mission on April 12 1961, the first human flight to orbit that opened the space era. (AP Photo/Alexander Zemlianichenko)

The Heroes of the Soviet Space Program monument is seen in Moscow, Russia, Friday, April 9, 2021, as Russia prepares to marks the 60th anniversary of Gagarin's pioneering mission on April 12 1961, the first human flight to orbit that opened the space era on on Monday. A 107-meter (351-feet) high titanium obelisk depicting a starting rocket dedicated to the first cosmonauts was opened in Moscow 1964 and had a Gagarin relief. The Cosmonauts Alley near the Conquerors of Space monument that opened in 1967 features bronze busts of Soviet cosmonauts, including Gagarin. (AP Photo/Alexander Zemlianichenko)

Workers clean the statue of Yuri Gagarin, the first person who flew to space, ahead of Cosmonautics Day celebrated on April 12, in Moscow, Russia, Friday, April 9, 2021. Russia on Monday marks the 60th anniversary of Gagarin's pioneering mission on April 12 1961, the first human flight to orbit that opened the space era. (AP Photo/Pavel Golovkin)

Workers clean the statue of Yuri Gagarin, the first person who flew to space, ahead of Cosmonautics Day celebrated on April 12, in Moscow, Russia, Friday, April 9, 2021. Russia on Monday marks the 60th anniversary of Gagarin's pioneering mission on April 12 1961, the first human flight to orbit that opened the space era. (AP Photo/Pavel Golovkin)

Workers clean the statue of Yuri Gagarin, the first person who flew to space, ahead of Cosmonautics Day celebrated on April 12, in Moscow, Russia, Friday, April 9, 2021. Russia on Monday marks the 60th anniversary of Gagarin's pioneering mission on April 12 1961, the first human flight to orbit that opened the space era. (AP Photo/Pavel Golovkin)

Maintenance workers clean the monument of Soviet cosmonaut Yuri Gagarin in Moscow on April 9, 2021. - Sixty years ago Soviet cosmonaut Yuri Gagarin became the first person in space, marking a new chapter in the history of space exploration. (Photo by Natalia KOLESNIKOVA / AFP)

Maintenance workers clean the monument of Soviet cosmonaut Yuri Gagarin in Moscow on April 9, 2021. - Sixty years ago Soviet cosmonaut Yuri Gagarin became the first person in space, marking a new chapter in the history of space exploration. (Photo by Natalia KOLESNIKOVA / AFP)

Maintenance workers clean the monument of Soviet cosmonaut Yuri Gagarin in Moscow on April 9, 2021. - Sixty years ago Soviet cosmonaut Yuri Gagarin became the first person in space, marking a new chapter in the history of space exploration. (Photo by Natalia KOLESNIKOVA / AFP)

Maintenance workers clean the monument of Soviet cosmonaut Yuri Gagarin in Moscow on April 9, 2021. - Sixty years ago Soviet cosmonaut Yuri Gagarin became the first person in space, marking it a new chapter in the history of space exploration. (Photo by Natalia KOLESNIKOVA / AFP)

Maintenance workers clean the monument of Soviet cosmonaut Yuri Gagarin in Moscow on April 9, 2021. - Sixty years ago Soviet cosmonaut Yuri Gagarin became the first person in space, marking it a new chapter in the history of space exploration. (Photo by Natalia KOLESNIKOVA / AFP)

Maintenance workers clean the monument of Soviet cosmonaut Yuri Gagarin in Moscow on April 9, 2021. - Sixty years ago Soviet cosmonaut Yuri Gagarin became the first person in space, marking it a new chapter in the history of space exploration. (Photo by Natalia KOLESNIKOVA / AFP)

Maintenance workers clean the monument of Soviet cosmonaut Yuri Gagarin in Moscow on April 9, 2021. - Sixty years ago Soviet cosmonaut Yuri Gagarin became the first person in space, marking it a new chapter in the history of space exploration. (Photo by Natalia KOLESNIKOVA / AFP)

Maintenance workers clean the monument of Soviet cosmonaut Yuri Gagarin in Moscow on April 9, 2021. - Sixty years ago Soviet cosmonaut Yuri Gagarin became the first person in space, marking a new chapter in the history of space exploration. (Photo by Natalia KOLESNIKOVA / AFP)

Maintenance workers clean the monument of Soviet cosmonaut Yuri Gagarin in Moscow on April 9, 2021. - Sixty years ago Soviet cosmonaut Yuri Gagarin became the first person in space, marking a new chapter in the history of space exploration. (Photo by Natalia KOLESNIKOVA / AFP)

Maintenance workers clean the monument of Soviet cosmonaut Yuri Gagarin in Moscow on April 9, 2021. - Sixty years ago Soviet cosmonaut Yuri Gagarin became the first person in space, marking a new chapter in the history of space exploration. (Photo by Kirill KUDRYAVTSEV / AFP)

Maintenance workers clean the monument of Soviet cosmonaut Yuri Gagarin in Moscow on April 9, 2021. - Sixty years ago Soviet cosmonaut Yuri Gagarin became the first person in space, marking a new chapter in the history of space exploration. (Photo by Kirill KUDRYAVTSEV / AFP)

Maintenance workers clean the bust of Soviet cosmonaut Yuri Gagarin in Moscow on April 9, 2021. - Sixty years ago Soviet cosmonaut Yuri Gagarin became the first person in space, marking a new chapter in the history of space exploration. (Photo by Kirill KUDRYAVTSEV / AFP)

Maintenance workers clean the bas-relief of Soviet cosmonaut Yuri Gagarin at the National Cosmonautics Museum in Moscow in Moscow on April 9, 2021. - Sixty years ago Soviet cosmonaut Yuri Gagarin became the first person in space, marking a new chapter in the history of space exploration. (Photo by Kirill KUDRYAVTSEV / AFP)

Maintenance workers clean the bas-relief of Soviet cosmonaut Yuri Gagarin at the National Cosmonautics Museum in Moscow in Moscow on April 9, 2021. - Sixty years ago Soviet cosmonaut Yuri Gagarin became the first person in space, marking a new chapter in the history of space exploration. (Photo by Kirill KUDRYAVTSEV / AFP)

Maintenance worker cleans the bas-relief of Soviet cosmonaut Yuri Gagarin on the National Cosmonautics museum in Moscow on April 9, 2021. - Sixty years ago Soviet cosmonaut Yuri Gagarin became the first person in space, marking a new chapter in the history of space exploration. (Photo by Kirill KUDRYAVTSEV / AFP)

Maintenance workers clean the bas-relief of Soviet cosmonaut Yuri Gagarin at the National Cosmonautics Museum in Moscow in Moscow on April 9, 2021. - Sixty years ago Soviet cosmonaut Yuri Gagarin became the first person in space, marking a new chapter in the history of space exploration. (Photo by Kirill KUDRYAVTSEV / AFP)

Maintenance workers clean the bas-relief of Soviet cosmonaut Yuri Gagarin at the National Cosmonautics Museum in Moscow in Moscow on April 9, 2021. - Sixty years ago Soviet cosmonaut Yuri Gagarin became the first person in space, marking a new chapter in the history of space exploration. (Photo by Kirill KUDRYAVTSEV / AFP)

A woman films the bas-relief of Soviet cosmonaut Yuri Gagarin at the National Cosmonautics Museum in Moscow in Moscow on April 9, 2021. - Sixty years ago Soviet cosmonaut Yuri Gagarin became the first person in space, marking a new chapter in the history of space exploration. (Photo by Kirill KUDRYAVTSEV / AFP)

Maintenance workers clean the bust of Soviet cosmonaut Yuri Gagarin in Moscow on April 9, 2021. - Sixty years ago Soviet cosmonaut Yuri Gagarin became the first person in space, marking a new chapter in the history of space exploration. (Photo by Kirill KUDRYAVTSEV / AFP)

Pedestrians look at their mobile phones as they walk down a street on a sunny day in Moscow on April 9, 2021. (Photo by Dimitar DILKOFF / AFP)

People walk in Red Square with the GUM, the State Department store, left, St. Basil's Cathedral, center, and the Spasskaya Tower, second right, during wet snowfall in Moscow, Russia, Thursday, April 8, 2021. (AP Photo/Alexander Zemlianichenko)

A woman prepares to take a photo with her smartphone after wet snowfall during sunset in Red Square with the Nikolskaya Tower, center, and the Historical Museum, right, in Moscow, Russia, Thursday, April 8, 2021. (AP Photo/Alexander Zemlianichenko), APTOPIX

People walk in Red Square with St. Basil's Cathedral, left, and the Spasskaya Tower after snowfall in Moscow, Russia, Thursday, April 8, 2021. (AP Photo/Alexander Zemlianichenko)

A boy jumps from one barrier curbstone to another in Red Square with the GUM, the State Department store, left, St. Basil's Cathedral, center, and the Spasskaya Tower, second right, in Moscow, Russia, Thursday, April 8, 2021. (AP Photo/Alexander Zemlianichenko)

A woman walks under an umbrella bearing on image of Saint Basil's Cathedral during a snowfall in Moscow on April 8, 2021. (Photo by Kirill KUDRYAVTSEV / AFP)

A woman, wearing a face mask amidst the ongoing Covid-19 disease pandemic, walks on a street during a snowfall in Moscow on April 8, 2021. (Photo by Kirill KUDRYAVTSEV / AFP)

Москва. Горожане во время апрельского снегопада.

Москва. Надпись на стекле автомобиля `Опять зима`.

TOPSHOT - A maintenance worker climbs to clean the Monument to the Conquerors of Space, bearing the model of a rocket, on top of the National Cosmonautics museum in Moscow on April 7, 2021. (Photo by Natalia KOLESNIKOVA / AFP)

A maintenance worker climbs to clean the Monument to the Conquerors of Space, bearing the model of a rocket, on top of the National Cosmonautics museum in Moscow on April 7, 2021. (Photo by Natalia KOLESNIKOVA / AFP)

A maintenance worker climbs to clean the Monument to the Conquerors of Space, bearing the model of a rocket, on top of the National Cosmonautics museum in Moscow on April 7, 2021. (Photo by Natalia KOLESNIKOVA / AFP)

A maintenance worker climbs to clean the Monument to the Conquerors of Space, bearing the model of a rocket, on top of the National Cosmonautics museum in Moscow on April 7, 2021. (Photo by Natalia KOLESNIKOVA / AFP)

A maintenance worker climbs to clean the Monument to the Conquerors of Space, bearing the model of a rocket, on top of the National Cosmonautics museum in Moscow on April 7, 2021. (Photo by Natalia KOLESNIKOVA / AFP)

A maintenance worker climbs to clean the Monument to the Conquerors of Space, bearing the model of a rocket, on top of the National Cosmonautics museum in Moscow on April 7, 2021. (Photo by Natalia KOLESNIKOVA / AFP)

An industrial climber cleans the Monument to the Conquerors of Space, bearing the model of a rocket, on top of the National Cosmonautics museum in Moscow on April 7, 2021. (Photo by Natalia KOLESNIKOVA / AFP)

Москва. Молодые люди на электросамокатах на одной из улиц города.

Москва. Девушка с велосипедом на Крымской набережной.

Москва. Девушка едет на велосипеде на Крымской набережной.

A passenger wearing a face mask sits in a metro train in Moscow early on April 5, 2021, amid the ongoing coronavirus disease pandemic. (Photo by Kirill KUDRYAVTSEV / AFP)

A woman walks in Moscow during a sunny day on April 5, 2021. (Photo by Natalia KOLESNIKOVA / AFP)

Two men run across a street in western Moscow on April 4, 2021. (Photo by Alexander NEMENOV / AFP)

A couple enjoys a view from a bridge in western Moscow on April 4, 2021. (Photo by Alexander NEMENOV / AFP)

Tourists sit on a pedestrian bridge in western Moscow on April 4, 2021. (Photo by Alexander NEMENOV / AFP)

TOPSHOT - A pedestrian wears a protective face mask as he walks in western Moscow on April 3, 2021. - Russia reports a decline in virus-related deaths in February on the previous month, as authorities say the worst of the pandemic has passed and aim to lift remaining curbs by the end of the summer. The figures published by the Rosstat statistics agency showed 14,171 Russians died due to the coronavirus in February, while a further 9,198 people died with the virus but primarily of other causes. (Photo by Alexander NEMENOV / AFP)

A pedestrian wears a protective face mask as he walks in western Moscow on April 3, 2021. - Russia reports a decline in virus-related deaths in February on the previous month, as authorities say the worst of the pandemic has passed and aim to lift remaining curbs by the end of the summer. The figures published by the Rosstat statistics agency showed 14,171 Russians died due to the coronavirus in February, while a further 9,198 people died with the virus but primarily of other causes. (Photo by Alexander NEMENOV / AFP)

A man walks his dog in a snow-covered street in western Moscow on April 3, 2021. (Photo by Alexander NEMENOV / AFP)

A man walks on the fresh snow covered yard after a snowfall in Moscow, Russia, early Friday, April 2, 2021. (AP Photo/Alexander Zemlianichenko)

A woman holding balloons rides an escalator at a metro station in Moscow on April 2, 2021. (Photo by NATALIA KOLESNIKOVA / AFP)

An owner wearing a face mask leads her dog in Moscow on April 2, 2021. (Photo by Yuri KADOBNOV / AFP)

A woman holds a cell phone in Moscow on April 2, 2021. (Photo by Yuri KADOBNOV / AFP)

An owner plays with his dog in Moscow on April 2, 2021. (Photo by Yuri KADOBNOV / AFP)

A man wearing a face mask walks in central Moscow on April 2, 2021. (Photo by Yuri KADOBNOV / AFP)

A woman wearing a face mask walks in central Moscow on April 2, 2021. (Photo by Yuri KADOBNOV / AFP)

A woman and a man wearing face masks walk in central Moscow on April 2, 2021. (Photo by Yuri KADOBNOV / AFP)

An owner plays with his dog in Moscow on April 2, 2021. (Photo by Yuri KADOBNOV / AFP)

A man wearing a face mask walks past Taganskaya metro station pavilion in central Moscow on April 1, 2021. (Photo by Yuri KADOBNOV / AFP)

A woman wearing a face mask passes by flying pigeons in central Moscow on April 1, 2021. (Photo by Yuri KADOBNOV / AFP)

A woman wearing a face mask walks in central Moscow on April 1, 2021. (Photo by Yuri KADOBNOV / AFP)

A person wearing a face mask walks in central Moscow on April 1, 2021. (Photo by Yuri KADOBNOV / AFP)

Москва. Водовзводная башня Московского Кремля и здание Министерства иностранных дел РФ.

Москва. Водовзводная башня Московского Кремля и здание Министерства иностранных дел РФ (на втором плане).

A young couple rest on a bench, as a street actor wearing an Angel costume speaks on the phone in Nikolskaya street near the Kremlin in Moscow, Russia, Wednesday, March 31, 2021. (AP Photo/Alexander Zemlianichenko), APTOPIX

A young couple rest on a bench, as a street actor wearing an Angel costume speaks on the phone in Nikolskaya street near the Kremlin in Moscow, Russia, Wednesday, March 31, 2021. (AP Photo/Alexander Zemlianichenko)

A street musician plays a saxophone in Nikolskaya street near the Kremlin in Moscow, Russia, Wednesday, March 31, 2021. (AP Photo/Alexander Zemlianichenko)

People walk along a bridge near a Stalin-era skyscraper in central Moscow on March 31, 2021. (Photo by Yuri KADOBNOV / AFP)

A woman walks along an embankment of the Moskva river in central Moscow on March 31, 2021. (Photo by Yuri KADOBNOV / AFP)

A woman and a man wearing face masks walk in central Moscow on March 31, 2021. (Photo by Yuri KADOBNOV / AFP)

A man wearing a face mask walks in central Moscow on March 31, 2021. (Photo by Yuri KADOBNOV / AFP)

Police patrol on Red Square in front of GUM. The guests of the capital visit the State Department Store "GUM". Today "GUM" lives as it was once conceived, an ideal commercial city of Moscow, as if it had lived 120 years of its life without losses and disasters. Since 2007, the fountain in the center of GUM pleases visitors, a legendary structure captured both in the official chronicles of the 20th century and in millions of private photographs. (Photo by Mihail Siergiejevicz / SOPA Imag/Sipa USA)

A man on a bridge in the center of GUM. The guests of the capital visit the State Department Store "GUM". Today "GUM" lives as it was once conceived, an ideal commercial city of Moscow, as if it had lived 120 years of its life without losses and disasters. Since 2007, the fountain in the center of GUM pleases visitors, a legendary structure captured both in the official chronicles of the 20th century and in millions of private photographs. (Photo by Mihail Siergiejevicz / SOPA Imag/Sipa USA)

The lemonade saleswoman fixes her makeup at GUM. The guests of the capital visit the State Department Store "GUM". Today "GUM" lives as it was once conceived, an ideal commercial city of Moscow, as if it had lived 120 years of its life without losses and disasters. Since 2007, the fountain in the center of GUM pleases visitors, a legendary structure captured both in the official chronicles of the 20th century and in millions of private photographs. (Photo by Mihail Siergiejevicz / SOPA Imag/Sipa USA)

People take photographs on Red Square in front of GUM. The guests of the capital visit the State Department Store "GUM". Today "GUM" lives as it was once conceived, an ideal commercial city of Moscow, as if it had lived 120 years of its life without losses and disasters. Since 2007, the fountain in the center of GUM pleases visitors, a legendary structure captured both in the official chronicles of the 20th century and in millions of private photographs. (Photo by Mihail Siergiejevicz / SOPA Imag/Sipa USA)

A security and metal detector officer at the entrance to GUM. The guests of the capital visit the State Department Store "GUM". Today "GUM" lives as it was once conceived, an ideal commercial city of Moscow, as if it had lived 120 years of its life without losses and disasters. Since 2007, the fountain in the center of GUM pleases visitors, a legendary structure captured both in the official chronicles of the 20th century and in millions of private photographs. (Photo by Mihail Siergiejevicz / SOPA Imag/Sipa USA)

Men eat ice cream near an antique statue in GUM. The guests of the capital visit the State Department Store "GUM". Today "GUM" lives as it was once conceived, an ideal commercial city of Moscow, as if it had lived 120 years of its life without losses and disasters. Since 2007, the fountain in the center of GUM pleases visitors, a legendary structure captured both in the official chronicles of the 20th century and in millions of private photographs. (Photo by Mihail Siergiejevicz / SOPA Imag/Sipa USA)

People rush to shop at GUM. The guests of the capital visit the State Department Store "GUM". Today "GUM" lives as it was once conceived, an ideal commercial city of Moscow, as if it had lived 120 years of its life without losses and disasters. Since 2007, the fountain in the center of GUM pleases visitors, a legendary structure captured both in the official chronicles of the 20th century and in millions of private photographs. (Photo by Mihail Siergiejevicz / SOPA Imag/Sipa USA)

People near the main fountain in GUM. The guests of the capital visit the State Department Store "GUM". Today "GUM" lives as it was once conceived, an ideal commercial city of Moscow, as if it had lived 120 years of its life without losses and disasters. Since 2007, the fountain in the center of GUM pleases visitors, a legendary structure captured both in the official chronicles of the 20th century and in millions of private photographs. (Photo by Mihail Siergiejevicz / SOPA Imag/Sipa USA)

Arched ceiling vaults and people on bridges in GUM. The guests of the capital visit the State Department Store "GUM". Today "GUM" lives as it was once conceived, an ideal commercial city of Moscow, as if it had lived 120 years of its life without losses and disasters. Since 2007, the fountain in the center of GUM pleases visitors, a legendary structure captured both in the official chronicles of the 20th century and in millions of private photographs. (Photo by Mihail Siergiejevicz / SOPA Imag/Sipa USA)

A man uses his smartphone walking along a street in Moscow on a sunny spring day on March 30, 2021. (Photo by NATALIA KOLESNIKOVA / AFP)

A drunk man helps his friend to get up off the ground on a sunny spring day in downtown Moscow on March 30, 2021. (Photo by NATALIA KOLESNIKOVA / AFP)

A woman walks past a graffiti depicting footballers Igor Akinfeev and Artyom Dzyuba in central Moscow on March 30, 2021. (Photo by Yuri KADOBNOV / AFP)

A woman wearing a face mask walks past a graffiti depicting Russia's national football team coach Stanislav Cherchesov and CSKA's goalkeeper Igor Akinfeev in central Moscow on March 30, 2021. (Photo by Yuri KADOBNOV / AFP)

Two women walk in central Moscow on March 30, 2021. (Photo by Yuri KADOBNOV / AFP)

A woman walks with her dog in central Moscow on March 30, 2021. (Photo by Yuri KADOBNOV / AFP)

A man wearing a face mask walks past padlocks left on a tree-shaped metal sculpture by newlyweds in central Moscow on March 30, 2021. (Photo by Yuri KADOBNOV / AFP)

People walk on a bridge in central Moscow with the 98-meter high Peter the Great statue in the background on March 30, 2021. (Photo by Yuri KADOBNOV / AFP)

A woman wearing a face mask walks along a bridge near a Stalin-era skyscraper in central Moscow on March 30, 2021. (Photo by Yuri KADOBNOV / AFP)

A woman sells flowers in a street in downtown Moscow on March 30, 2021. (Photo by Dimitar DILKOFF / AFP)

A young couple share a tender moment as they ride an escalator to the subway in Moscow, Russia, Monday, March 29, 2021. (AP Photo/Alexander Zemlianichenko), APTOPIX

A young couple share a tender moment as they ride an escalator to the subway in Moscow, Russia, Monday, March 29, 2021. (AP Photo/Alexander Zemlianichenko)

A young couple share a tender moment as they ride an escalator to the subway in Moscow, Russia, Monday, March 29, 2021. (AP Photo/Alexander Zemlianichenko)

People wearing face masks to protect against coronavirus leave an escalator in the subway in Moscow, Russia, Monday, March 29, 2021. (AP Photo/Alexander Zemlianichenko)

People wearing face masks to protect against coronavirus ride an escalator to the subway in Moscow, Russia, Monday, March 29, 2021. (AP Photo/Alexander Zemlianichenko)

A crow flies over a tree in a forest outside Moscow on March 29, 2021. (Photo by Yuri KADOBNOV / AFP)

A crow attacks a raven carrying a captured mouse in a forest outside Moscow on March 29, 2021. (Photo by Yuri KADOBNOV / AFP)

A person practises snowkiting on the frozen Moskva River in Moscow's Strogino district on March 29, 2021. (Photo by NATALIA KOLESNIKOVA / AFP)

A man ice fishes on the frozen Moskva River in Moscow's Strogino district on March 29, 2021. (Photo by NATALIA KOLESNIKOVA / AFP)

A man walks a dog in Moscow's Strogino district on March 29, 2021. (Photo by NATALIA KOLESNIKOVA / AFP)

A man walks a dog at a park in Moscow's Strogino district on March 29, 2021. (Photo by NATALIA KOLESNIKOVA / AFP)

A man practises skateboarding on a sunny spring day in Moscow's Strogino district on March 29, 2021. (Photo by NATALIA KOLESNIKOVA / AFP)

A man ice fishes on the frozen Moskva River in Moscow's Strogino district on March 29, 2021. (Photo by NATALIA KOLESNIKOVA / AFP)

MOSCOW, RUSSIA - MARCH 29: A view from Zaryade Park during sunset in Moscow, Russia on March 29, 2021. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - MARCH 29: A view from Zaryade Park during sunset in Moscow, Russia on March 29, 2021. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - MARCH 29: A view from Zaryade Park during sunset in Moscow, Russia on March 29, 2021. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - MARCH 29: A view from Zaryade Park during sunset in Moscow, Russia on March 29, 2021. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - MARCH 29: A view from Zaryade Park during sunset in Moscow, Russia on March 29, 2021. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - MARCH 29: A view from Zaryade Park during sunset in Moscow, Russia on March 29, 2021. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - MARCH 29: A view from Zaryade Park during sunset in Moscow, Russia on March 29, 2021. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - MARCH 29: A view from Zaryade Park during sunset in Moscow, Russia on March 29, 2021. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - MARCH 29: A view from Zaryade Park during sunset in Moscow, Russia on March 29, 2021. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - MARCH 29: Silhouettes of children are seen in Zaryade Park during a sunset in Moscow, Russia on March 29, 2021. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - MARCH 29: Silhouettes of children are seen in Zaryade Park during a sunset in Moscow, Russia on March 29, 2021. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - MARCH 29: Silhouettes of children are seen in Zaryade Park during a sunset in Moscow, Russia on March 29, 2021. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - MARCH 29: A view from Zaryade Park during sunset in Moscow, Russia on March 29, 2021. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - MARCH 29: A view from Zaryade Park during sunset in Moscow, Russia on March 29, 2021. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - MARCH 29: A view from Zaryade Park during sunset in Moscow, Russia on March 29, 2021. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - MARCH 29: A view from Zaryade Park during sunset in Moscow, Russia on March 29, 2021. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - MARCH 29: A view from Zaryade Park during sunset in Moscow, Russia on March 29, 2021. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - MARCH 29: A view from Zaryade Park during sunset in Moscow, Russia on March 29, 2021. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - MARCH 29: A view from Zaryade Park during sunset in Moscow, Russia on March 29, 2021. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM