People take part in a torch ceremony, organised in commemoration of late General Hristo Lukov, who led the nationalist Union of Bulgarian National Legions in the 1930s and early 1940s, in Sofia, Bulgaria, February 13, 2021. REUTERS/Stoyan Nenov

People take part in a torch ceremony, organised in commemoration of late General Hristo Lukov, who led the nationalist Union of Bulgarian National Legions in the 1930s and early 1940s, in Sofia, Bulgaria, February 13, 2021. REUTERS/Stoyan Nenov

People take part in a torch ceremony, organised in commemoration of late General Hristo Lukov, who led the nationalist Union of Bulgarian National Legions in the 1930s and early 1940s, in Sofia, Bulgaria, February 13, 2021. REUTERS/Stoyan Nenov

Bulgarian Health MinisterKostadin Angelov receives the second shot of the Pfizer-BioNTech coronavirus disease (COVID-19) vaccine at Alexandrovska Hospital in Sofia, Bulgaria, January 18, 2021. REUTERS/Stoyan Nenov

Bulgarian Health Minister Kostadin Angelov receives the second shot of the Pfizer-BioNTech coronavirus disease (COVID-19) vaccine at Alexandrovska Hospital in Sofia, Bulgaria, January 18, 2021. REUTERS/Stoyan Nenov

Bulgarian Health Minister Kostadin Angelov receives the Pfizer-BioNTech coronavirus disease (COVID-19) vaccine at Saint Anna hospital in Sofia, Bulgaria, December 27, 2020. REUTERS/Stoyan Nenov

Bulgarian Health Minister Kostadin Angelov watches an Orthodox priest receiving the Pfizer-BioNTech coronavirus disease (COVID-19) vaccine at Saint Anna hospital in Sofia, Bulgaria, December 27, 2020. REUTERS/Stoyan Nenov TPX IMAGES OF THE DAY

Bulgarian Health Minister Kostadin Angelov receives the Pfizer-BioNTech coronavirus disease (COVID-19) vaccine at Saint Anna hospital in Sofia, Bulgaria, December 27, 2020. REUTERS/Stoyan Nenov

Bulgarian street skateboarder Petar "Stewie" Stantchev, 25, is embraced by his friend Chilean street skateboarder Cata Diaz, 21, before they do tricks, in front of MACBA (Barcelona Contemporary Art Museum), amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain November 17, 2020. Picture taken November 17, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 24, wearing a face mask holds his skate as he crosses a street, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain October 3, 2020. Picture taken October 3, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 24, skates on a street in the Raval district, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain September 9, 2020. Picture taken September 9, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 24, stands with his skate as police officers arrive at MACBA (Barcelona Contemporary Art Museum), amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain October 12, 2020.Picture taken October 12, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 25, wearing a face mask gestures on a street next to his house in the Raval district, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain November 11, 2020. Picture taken November 11, 2020. REUTERS/Nacho Doce

Bulgarian skateboarder Petar "Stewie" Stantchev, 25, does a trick, known as a frontside ollie, in front of Barcelona Contemporary Art Museum (MACBA) in Barcelona, Spain November 11, 2020. Picture taken November 11, 2020. REUTERS/Nacho Doce TPX IMAGES OF THE DAY

Bulgarian street skateboarder Petar "Stewie" Stantchev, 25, is pictured with his tattoos as he rests at the kitchen table inside his house, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain November 17, 2020. Picture taken November 17, 2020. REUTERS/Nacho Doce

Bulgarian skateboarder Petar "Stewie" Stantchev, 25, does a trick, known as a backside heelflip, on a street in the Barceloneta district in Barcelona, Spain November 3, 2020. Picture taken November 3, 2020. REUTERS/Nacho Doce

A homeless man sleeps next to Bulgarian street skateboarder Petar "Stewie" Stantchev, 25, and another skaters before they do tricks, in front of MACBA (Barcelona Contemporary Art Museum), amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain November 18, 2020. Picture taken November 18, 2020. REUTERS/Nacho Doce

Bulgarian skateboarder Petar "Stewie" Stantchev, 24, does a trick, known as a nollie 360 flip, in front of Barcelona Contemporary Art Museum in Barcelona, Spain October 11, 2020. Picture taken October 11, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 25, celebrates his his birthday with his friends, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain October 16, 2020. Picture taken October 16, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 25, and his mates prepare to do tricks, in front of MACBA (Barcelona Contemporary Art Museum), amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain November 18, 2020. Picture taken November 18, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 25, does a trick, known as a nollie shuvit, in front of Barcelona Contemporary Art Museum in Barcelona, Spain November 17, 2020. Picture taken November 17, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 25, drinks coffee next to his Pablo Perez, a fellow skateboarder, inside his house, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain November 17, 2020. Picture taken November 17, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 24, stretches inside his home, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain October 3, 2020. Picture taken October 3, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 24, wearing a face mask holds his skate as he talks with friends on Las Ramblas street, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain October 3, 2020. Picture taken October 3, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 25, wearing a face mask buys vegetables and fruits near his house in the Raval district, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain November 16, 2020. Picture taken November 16, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 25, stretches inside his home, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain December 12, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 25, wearing a face mask as he takes the subway, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain November 16, 2020. Picture taken November 16, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 25, ties the shoes inside his house, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain November 17, 2020. Picture taken November 17, 2020. REUTERS/Nacho Doce

A man looks at Bulgarian street skateboarder Petar "Stewie" Stantchev, 25, doing a trick, known as an ollie, in front of MACBA (Barcelona Contemporary Art Museum), amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain November 11, 2020. Picture taken November 11, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 24, does a trick, known as a backside crooked grind, in front of MACBA (Barcelona Contemporary Art Museum), amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain October 13, 2020. Picture taken October 13, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 25, skates on an inclined surface, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain November 16, 2020. Picture taken November 16, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 25, talks with a friend after he does a trick, in front of MACBA (Barcelona Contemporary Art Museum), amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain November 18, 2020. Picture taken November 18, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 25, and Pablo Perez, a fellow skateboarder, skate at Catalunya square, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain November 9, 2020. Picture taken November 9, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 25, prepares to do a trick in front of MACBA (Barcelona Contemporary Art Museum), amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain November 11, 2020. Picture taken November 11, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 24, is silhouetted on a wall as he jumps with his skate, in front of MACBA (Barcelona Contemporary Art Museum), amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain October 13, 2020. Picture taken October 13, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 25, skates at Catalunya square, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain November 9, 2020. Picture taken November 9, 2020. REUTERS/Nacho Doce

Bulgarian street skateboarder Petar "Stewie" Stantchev, 25, wearing a face mask as he on the subway, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain November 16, 2020. Picture taken November 16, 2020. REUTERS/Nacho Doce

Bulgarian Navy minehunter BGS Tsibar sails in the Bosphorus towards the Black Sea, in Istanbul, Turkey October 29, 2020, after participating in the Turkish Navy-led multinational Mine Warfare Exercise Nusret-2020. REUTERS/Murad Sezer

Medical personnel from Sofia's biggest emergency hospital, Pirogov turn on the flashlights of their mobile phones, as they participate in an organised initiative by Sofia's major hospitals to appeal to Bulgarians to comply with the restrictions aimed at containing the spike in the spread of the coronavirus disease (COVID-19), Bulgaria, October 27, 2020. REUTERS/Stoyan Nenov

Medical personnel from Sofia's biggest emergency hospital, Pirogov turn on the flashlights of their mobile phones, as they participate in an organised initiative by Sofia's major hospitals to appeal to Bulgarians to comply with the restrictions aimed at containing the spike in the spread of the coronavirus disease (COVID-19), Bulgaria, October 27, 2020. REUTERS/Stoyan Nenov

Bulgarian Minister of Agriculture Desislava Taneva attends an EU agriculture and fisheries ministers meeting in Luxembourg October 19, 2020. Francois Walschaerts/Pool via REUTERS

A man wears a Bulgarian flag as he holds a banner that partially reads: "Wake up" during an anti-government demonstration in Sofia, Bulgaria October 3, 2020. REUTERS/Stoyan Nenov

A man waves a Bulgarian flag during an anti-government demonstration in Sofia, Bulgaria October 3, 2020. REUTERS/Stoyan Nenov

Dutch Prime Minister Mark Rutte speaks with Bulgarian Prime Minister Boyko Borissov at the start of the second face-to-face European Union summit since the coronavirus disease (COVID-19) outbreak, in Brussels, Belgium October 1, 2020. Olivier Hoslet/Pool via REUTERS

Dutch Prime Minister Mark Rutte speaks with Bulgarian Prime Minister Boyko Borissov at the start of the second face-to-face European Union summit since the coronavirus disease (COVID-19) outbreak, in Brussels, Belgium October 1, 2020. Olivier Hoslet/Pool via REUTERS

European Council President Charles Michel bumps elbows with Bulgarian Prime Minister Boyko Borissov at the start of the second face-to-face European Union summit since the coronavirus disease (COVID-19) outbreak, in Brussels, Belgium October 1, 2020. Olivier Hoslet/Pool via REUTERS

European Council President Charles Michel reacts as European Commission President Ursula von der Leyen and Bulgarian Prime Minister Boyko Borissov greet at the start of the second face-to-face European Union summit since the coronavirus disease (COVID-19) outbreak, in Brussels, Belgium October 1, 2020. Olivier Hoslet/Pool via REUTERS

European Council President Charles Michel reacts as European Commission President Ursula von der Leyen and Bulgarian Prime Minister Boyko Borissov greet at the start of the second face-to-face European Union summit since the coronavirus disease (COVID-19) outbreak, in Brussels, Belgium October 1, 2020. Olivier Hoslet/Pool via REUTERS

Bulgarian Prime Minister Boyko Borissov takes off his face mask as he arrives for the second face-to-face European Union summit since the coronavirus disease (COVID-19) outbreak, in Brussels, Belgium October 1, 2020. Francisco Seco/Pool via REUTERS

Bulgarian Prime Minister Boyko Borissov gestures as he arrives for the second face-to-face European Union summit since the coronavirus disease (COVID-19) outbreak, in Brussels, Belgium October 1, 2020. Aris Oikonomou/Pool via REUTERS

Bulgarian Prime Minister Boyko Borissov arrives for the second face-to-face European Union summit since the coronavirus disease (COVID-19) outbreak, in Brussels, Belgium October 1, 2020. Aris Oikonomou/Pool via REUTERS

Bulgarian Prime Minister Boyko Borissov arrives for the second face-to-face European Union summit since the coronavirus disease (COVID-19) outbreak, in Brussels, Belgium October 1, 2020. Aris Oikonomou/Pool via REUTERS

Bulgarian Prime Minister Boyko Borissov, Austria's Chancellor Sebastian Kurz and Romanian President Klaus Iohannis attend the second face-to-face EU summit since the coronavirus disease (COVID-19) outbreak, in Brussels, Belgium, October 1, 2020. REUTERS/Johanna Geron/Pool

A general view shows the courtroom at the Specialised Criminal Court in Sofia, Bulgaria, September 21, 2020, before the start of the trial for the 2012 bus bombing that killed five Israeli tourists and a Bulgarian driver at a Black Sea airport. REUTERS/Stoyan Nenov

A general view shows the courtroom at the Specialised Criminal Court in Sofia, Bulgaria, September 21, 2020, before the start of the trial for the 2012 bus bombing that killed five Israeli tourists and a Bulgarian driver at a Black Sea airport. REUTERS/Stoyan Nenov

Protesters hold a large Bulgarian flag as they attend an anti-government demonstration in Sofia, Bulgaria September 10, 2020. REUTERS/Stoyan Nenov

A protester holds a large Bulgarian flag as he attends an anti-government demonstration in Sofia, Bulgaria September 10, 2020. REUTERS/Stoyan Nenov

A man wrapped in Bulgarian flag attends an anti-government demonstration in Sofia, Bulgaria, July 30, 2020. REUTERS/Stoyan Nenov

A protester throws an egg at the Bulgarian government building during an anti-government demonstration in Sofia, Bulgaria, July 30, 2020. REUTERS/Stoyan Nenov