Russian businessman Arkady Rotenberg reacts before a ceremony to award constructors of the Crimean Bridge over the Kerch Strait in Sevastopol, Crimea March 18, 2020. Alexander Nemenov/Pool via REUTERS

Russian businessman Arkady Rotenberg reacts before a ceremony to award constructors of the Crimean Bridge over the Kerch Strait in Sevastopol, Crimea March 18, 2020. Alexander Nemenov/Pool via REUTERS

Russian President Vladimir Putin decorates businessman Arkady Rotenberg with the Hero of Labour medal during a ceremony, awarding constructors of the Crimean Bridge over the Kerch Strait, in Sevastopol, Crimea March 18, 2020. Alexander Nemenov/Pool via REUTERS

Russian President Vladimir Putin poses for a picture with businessman Arkady Rotenberg and other participants of a ceremony, which awards constructors of the Crimean Bridge over the Kerch Strait, in Sevastopol, Crimea March 18, 2020. Alexander Nemenov/Pool via REUTERS

Russian President Vladimir Putin decorates businessman Arkady Rotenberg with the Hero of Labour medal during a ceremony, awarding constructors of the Crimean Bridge over the Kerch Strait, in Sevastopol, Crimea March 18, 2020. Alexander Nemenov/Pool via REUTERS

Russian President Vladimir Putin decorates businessman Arkady Rotenberg with the Hero of Labour medal during a ceremony to award constructors of the Crimean Bridge over the Kerch Strait in Sevastopol, Crimea March 18, 2020. Alexander Nemenov/Pool via REUTERS

Russian President Vladimir Putin decorates businessman Arkady Rotenberg with the Hero of Labour medal during a ceremony to award constructors of the Crimean Bridge over the Kerch Strait in Sevastopol, Crimea March 18, 2020. Alexander Nemenov/Pool via REUTERS

Russian President Vladimir Putin decorates businessman Arkady Rotenberg with the Hero of Labour medal during a ceremony to award constructors of the Crimean Bridge over the Kerch Strait in Sevastopol, Crimea March 18, 2020. Alexander Nemenov/Pool via REUTERS

Russian President Vladimir Putin decorates businessman Arkady Rotenberg with the Hero of Labour medal during a ceremony to award constructors of the Crimean Bridge over the Kerch Strait in Sevastopol, Crimea March 18, 2020. Alexander Nemenov/Pool via REUTERS

Russian President Vladimir Putin delivers a speech during a ceremony, which awards constructors of the Crimean Bridge over the Kerch Strait, in Sevastopol, Crimea March 18, 2020. Alexander Nemenov/Pool via REUTERS

Russian President Vladimir Putin delivers a speech during a ceremony, which awards constructors of the Crimean Bridge over the Kerch Strait, in Sevastopol, Crimea March 18, 2020. Alexander Nemenov/Pool via REUTERS

Russian President Vladimir Putin delivers a speech during a ceremony, which awards constructors of the Crimean Bridge over the Kerch Strait, in Sevastopol, Crimea March 18, 2020. Alexander Nemenov/Pool via REUTERS

Russian President Vladimir Putin delivers a speech during a ceremony, which awards constructors of the Crimean Bridge over the Kerch Strait, in Sevastopol, Crimea March 18, 2020. Alexander Nemenov/Pool via REUTERS

A general view shows a newly opened railway bridge, which was constructed to connect the Russian mainland with the Crimean peninsula, in the Kerch Strait, Crimea December 25, 2019. REUTERS/Alla Dmitrieva

A tourist takes pictures while standing on the Ai-Petri peak in the Crimean Mountains outside the Black Sea resort of Yalta, Crimea October 27, 2019. REUTERS/Alexey Pavlishak

A tourist admires the view while standing on the Ai-Petri peak in the Crimean Mountains outside the Black Sea resort of Yalta, Crimea October 27, 2019. REUTERS/Alexey Pavlishak

Crimean Tatars slaughter a sheep while marking the Muslim holiday of Eid al-Adha in the town of Saky, Crimea August 11, 2019. REUTERS/Alexey Pavlishak

Crimean Tatars slaughter a sheep while marking the Muslim holiday of Eid al-Adha in the town of Saky, Crimea August 11, 2019. REUTERS/Alexey Pavlishak

FILE PHOTO: A woman holds a portrait of Russia's President Vladimir Putin during celebrations on the main square of the Crimean city of Simferopol March 21, 2014. Putin signed laws completing Russia's annexation of Crimea on Friday, as investors took fright at a U.S. decision to slap sanctions on his inner circle of money men and security officials. REUTERS/Shamil Zhumatov/File Photo

Britain's Queen Elizabeth II looks at a Victorian illusion technique known as Pepper’s Ghost of a waltz danced at the Crimean Ball of 1856, as part of the exhibition to mark the 200th anniversary of the birth of Queen Victoria for the Summer Opening of Buckingham Palace, in London, Britain, July 17, 2019. Victoria Jones/Pool via REUTERS

Britain's Queen Elizabeth II looks at paintings from the Crimean War period and Queen Victoria distributing medals on Horse Guards Parade, alongside Lucy Peter, assistant curator, during a special exhibition celebrating the 200th anniversary of the birth of Queen Victoria which marks this year's Summer Opening of Buckingham Palace in London, Britain, July 17, 2019. Victoria Jones/Pool via REUTERS

REFILE - ADDING BYLINE Britain's Queen Elizabeth II looks at a Victorian illusion technique known as Pepper's Ghost of a waltz danced at the Crimean Ball of 1856, in the Ballroom at Buckingham Palace, as part of the special exhibition celebrating the 200th anniversary of the birth of Queen Victoria which marks this year's Summer Opening of Buckingham Palace in London, Britain, July 17, 2019. Victoria Jones/Pool via REUTERS

REFILE - ADDING BYLINE Britain's Queen Elizabeth II looks at a Victorian illusion technique known as Pepper's Ghost of a waltz danced at the Crimean Ball of 1856, in the Ballroom at Buckingham Palace, as part of the special exhibition celebrating the 200th anniversary of the birth of Queen Victoria which marks this year's Summer Opening of Buckingham Palace in London, Britain, July 17, 2019. Victoria Jones/Pool via REUTERS

A man prays next to a monument at a rally, commemorating Crimean Tatars mass deportations from the region in 1944, in Simferopol, Crimea, May 18, 2019. REUTERS/Alexey Pavlishak

A man looks at an exhibition at a rally, commemorating Crimean Tatars mass deportations from the region in 1944, in the village of Siren, in Bakhchisaray district, Crimea, May 18, 2019. REUTERS/Alexey Pavlishak

Women pray at a rally, commemorating Crimean Tatars mass deportations from the region in 1944, in Simferopol, Crimea, May 18, 2019. REUTERS/Alexey Pavlishak

People gather at a rally, commemorating Crimean Tatars mass deportations from the region in 1944, in the village of Siren, in Bakhchisaray district, Crimea, May 18, 2019. REUTERS/Alexey Pavlishak

A Crimean Tatars flag flies at a rally, commemorating Crimean Tatars mass deportations from the region in 1944, in the village of Siren, in Bakhchisaray district, Crimea, May 18, 2019. REUTERS/Alexey Pavlishak

A woman reacts at a rally, commemorating Crimean Tatars mass deportations from the region in 1944, in the village of Siren, in Bakhchisaray district, Crimea, May 18, 2019. REUTERS/Alexey Pavlishak

A man looks on at a rally, commemorating Crimean Tatars mass deportations from the region in 1944, in the village of Siren, in Bakhchisaray district, Crimea, May 18, 2019. REUTERS/Alexey Pavlishak

People gather at a rally, commemorating Crimean Tatars mass deportations from the region in 1944, in the village of Siren, in Bakhchisaray district, Crimea, May 18, 2019. REUTERS/Alexey Pavlishak

A general view shows a road-and-rail bridge, which is constructed to connect the Russian mainland with the Crimean peninsula, during sunrise in the Kerch Strait, Crimea April 3, 2019. REUTERS/Alexey Pavlishak

A car drives on a bridge, which is constructed to connect the Russian mainland with the Crimean peninsula, in the Kerch Strait, Crimea April 3, 2019. REUTERS/Alexey Pavlishak

A general view shows a road-and-rail bridge, which is constructed to connect the Russian mainland with the Crimean peninsula, during sunrise in the Kerch Strait, Crimea April 3, 2019. REUTERS/Alexey Pavlishak

A general view shows a road-and-rail bridge, which is constructed to connect the Russian mainland with the Crimean peninsula, during sunrise in the Kerch Strait, Crimea April 3, 2019. REUTERS/Alexey Pavlishak

Ilmi Umerov, Crimean Tatar prominent activist who opposes Russia’s annexation of Crimea, speaks during an interview with Reuters in Kiev, Ukraine March 6, 2019. Picture taken March 6, 2019. REUTERS/Valentyn Ogirenko

Ilmi Umerov, Crimean Tatar prominent activist who opposes Russia’s annexation of Crimea, speaks with his son Suleiman via video call during an interview with Reuters in Kiev, Ukraine March 6, 2019. Picture taken March 6, 2019. REUTERS/Valentyn Ogirenko

Ilmi Umerov, Crimean Tatar prominent activist who opposes Russia’s annexation of Crimea, speaks during an interview with Reuters in Kiev, Ukraine March 6, 2019. Picture taken March 6, 2019. REUTERS/Valentyn Ogirenko

Ilmi Umerov, Crimean Tatar prominent activist who opposes Russia’s annexation of Crimea, shows a picture of his house in Crimea during an interview with Reuters in Kiev, Ukraine March 6, 2019. Picture taken March 6, 2019. REUTERS/Valentyn Ogirenko

Ilmi Umerov, Crimean Tatar prominent activist who opposes Russia’s annexation of Crimea, speaks during an interview with Reuters in Kiev, Ukraine March 6, 2019. Picture taken March 6, 2019. REUTERS/Valentyn Ogirenko

Ilmi Umerov, Crimean Tatar prominent activist who opposes Russia’s annexation of Crimea, speaks with his son Suleiman via video call during an interview with Reuters in Kiev, Ukraine March 6, 2019. Picture taken March 6, 2019. REUTERS/Valentyn Ogirenko

A woman holds a portrait of Russia's President Vladimir Putin during celebrations on the main square of the Crimean city of Simferopol March 21, 2014. REUTERS/Shamil Zhumatov PLEASE SEARCH "FROM THE FILES - 5TH ANNIVERSARY OF CRIMEA ANNEXATION" FOR ALL PICTURES.

A woman poses with a Ukrainian (L) and a Russian passport outside an office of the Russian Federal Migration Service, where she received a Russian passport, in the Crimean city of Simferopol April 7, 2014. REUTERS/Maxim Shemetov PLEASE SEARCH "FROM THE FILES - 5TH ANNIVERSARY OF CRIMEA ANNEXATION" FOR ALL PICTURES.

A Russian tank crew member runs in front of his T-72B tank after their arrival in Crimea in the settlement of Gvardeiskoye near the Crimean city of Simferopol March 31, 2014. REUTERS/Yannis Behrakis PLEASE SEARCH "FROM THE FILES - 5TH ANNIVERSARY OF CRIMEA ANNEXATION" FOR ALL PICTURES.

People, including Crimean Tatars, gather near a court building before the expected arrival of crew members of Ukrainian naval ships, which were recently seized by Russia's FSB security service, in Simferopol, Crimea November 27, 2018. REUTERS/Pavel Rebrov

Crimean Tatars and journalists gather near a court building before the expected arrival of crew members of Ukrainian naval ships, which were recently seized by Russia's FSB security service, in Simferopol, Crimea November 27, 2018. REUTERS/Pavel Rebrov

A vessel sails under a bridge connecting the Russian mainland with the Crimean Peninsula across the Kerch Strait, Crimea November 26, 2018. REUTERS/Pavel Rebrov

A vessel sails past a bridge connecting the Russian mainland with the Crimean Peninsula across the Kerch Strait, Crimea November 26, 2018. REUTERS/Pavel Rebrov

Birds fly past a road-and-rail bridge, which is constructed to connect the Russian mainland with the Crimean peninsula, at sunrise in the Kerch Strait, Crimea November 26, 2018. REUTERS/Pavel Rebrov TPX IMAGES OF THE DAY

A general view shows a road-and-rail bridge, which is constructed to connect the Russian mainland with the Crimean peninsula, at sunrise in the Kerch Strait, Crimea November 26, 2018. REUTERS/Pavel Rebrov

Birds fly past a road-and-rail bridge, which is constructed to connect the Russian mainland with the Crimean peninsula, at sunrise in the Kerch Strait, Crimea November 26, 2018. REUTERS/Pavel Rebrov

Birds fly past a road-and-rail bridge, which is constructed to connect the Russian mainland with the Crimean peninsula, at sunrise in the Kerch Strait, Crimea November 26, 2018. REUTERS/Pavel Rebrov

Russian jet fighters fly over a bridge connecting the Russian mainland with the Crimean Peninsula with a cargo ship beneath it after three Ukrainian navy vessels were stopped by Russia from entering the Sea of Azov via the Kerch Strait in the Black Sea, Crimea November 25, 2018. REUTERS/Pavel Rebrov TPX IMAGES OF THE DAY

Russian jet fighters fly over vessels after the channel beneath a bridge connecting the Russian mainland with the Crimean Peninsula was blocked to stop three Ukrainian navy ships from entering the Sea of Azov via the Kerch Strait in the Black Sea, Crimea November 25, 2018. REUTERS/Pavel Rebrov

Russian jet fighters fly over vessels after the channel beneath a bridge connecting the Russian mainland with the Crimean Peninsula was blocked to stop three Ukrainian navy ships from entering the Sea of Azov via the Kerch Strait in the Black Sea, Crimea November 25, 2018. REUTERS/Pavel Rebrov

Russian jet fighters fly over a bridge connecting the Russian mainland with the Crimean Peninsula after three Ukrainian navy vessels were stopped by Russia from entering the Sea of Azov via the Kerch Strait in the Black Sea, Crimea November 25, 2018. REUTERS/Pavel Rebrov

A Russian cargo ship is seen beneath a bridge connecting the Russian mainland with the Crimean Peninsula after three Ukrainian navy vessels were stopped by Russia from entering the Sea of Azov via the Kerch Strait in the Black Sea, Crimea November 25, 2018. REUTERS/Pavel Rebrov

A Russian cargo ship is seen beneath a bridge connecting the Russian mainland with the Crimean Peninsula after three Ukrainian navy vessels were stopped by Russia from entering the Sea of Azov via the Kerch Strait in the Black Sea, Crimea November 25, 2018. REUTERS/Pavel Rebrov

Russian jet fighters fly over a bridge connecting the Russian mainland with the Crimean Peninsula with a cargo ship beneath it after three Ukrainian navy vessels were stopped by Russia from entering the Sea of Azov via the Kerch Strait in the Black Sea, Crimea November 25, 2018. REUTERS/Pavel Rebrov

Russian jet fighters fly over a bridge connecting the Russian mainland with the Crimean Peninsula after three Ukrainian navy vessels were stopped by Russia from entering the Sea of Azov via the Kerch Strait in the Black Sea, Crimea November 25, 2018. REUTERS/Pavel Rebrov