2019 European Games - Opening Ceremony - Dinamo Stadium, Minsk, Belarus - June 21, 2019. Prime Minister of Russia Dmitry Medvedev uses his mobile phone in the stands during the opening ceremony 

2019 European Games - Opening Ceremony - Dinamo Stadium, Minsk, Belarus - June 21, 2019. Prime Minister of Russia Dmitry Medvedev sat in the stands during the opening ceremony REUTERS/Vasily Fedosenko 

Russian Prime Minister Dmitry Medvedev speaks during the International Labour Organization's annual labour conference in Geneva, Switzerand June 11, 2019. REUTERS/Denis Balibouse 

Russian Prime Minister Dmitry Medvedev speaks during the International Labour Organization's annual labour conference in Geneva, Switzerand June 11, 2019. REUTERS/Denis Balibouse 

Russian Prime Minister Dmitry Medvedev speaks during the International Labour Organization's annual labour conference in Geneva, Switzerand June 11, 2019. REUTERS/Denis Balibouse 

Russian Prime Minister Dmitry Medvedev speaks during the International Labour Organization's annual labour conference in Geneva, Switzerand June 11, 2019. REUTERS/Denis Balibouse 

Russian Prime Minister Dmitry Medvedev attends 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 9, 2019. REUTERS/Maxim Shemetov 

Russian President Vladimir Putin and Prime Minister Dmitry Medvedev arrive 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 9, 2019. REUTERS/Maxim Shemetov 

Russian President Vladimir Putin and Prime Minister Dmitry Medvedev arrive 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 9, 2019. REUTERS/Maxim Shemetov 

Russian President Vladimir Putin and Prime Minister Dmitry Medvedev arrive 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 9, 2019. REUTERS/Maxim Shemetov 

Russian President Vladimir Putin, Russian Prime Minister Dmitry Medvedev and Kazakhstan's Former President Nursultan Nazarbayev arrive 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 9, 2019. REUTERS/Maxim Shemetov 

Russian President Vladimir Putin, Russian Prime Minister Dmitry Medvedev and Kazakhstan's Former President Nursultan Nazarbayev arrive 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 9, 2019. REUTERS/Maxim Shemetov 

Russia's President Vladimir Putin, Prime Minister Dmitry Medvedev and his wife Svetlana attend the Orthodox Easter service at the Cathedral of Christ the Saviour in Moscow, Russia April 28, 2019. REUTERS/Evgenia Novozhenina TPX IMAGES OF THE DAY 

Russia's Prime Minister Dmitry Medvedev, his wife Svetlana, President Vladimir Putin and Moscow's Mayor Sergei Sobyanin attend the Orthodox Easter service at the Cathedral of Christ the Saviour in Moscow, Russia April 27, 2019. REUTERS/Evgenia Novozhenina 

Russia's President Vladimir Putin, Prime Minister Dmitry Medvedev and his wife Svetlana smile as they attend the Orthodox Easter service at the Cathedral of Christ the Saviour in Moscow, Russia April 28, 2019. REUTERS/Evgenia Novozhenina 

Russia's President Vladimir Putin, Prime Minister Dmitry Medvedev and his wife Svetlana attend the Orthodox Easter service at the Cathedral of Christ the Saviour in Moscow, Russia April 28, 2019. REUTERS/Evgenia Novozhenina 

Russia's President Vladimir Putin, Dmitry Medvedev and his wife Svetlana attend the Orthodox Easter service at the Cathedral of Christ the Saviour in Moscow, Russia April 27, 2019. REUTERS/Evgenia Novozhenina 

Russian Prime Minister Dmitry Medvedev enters his car after an official welcome ceremony in Sofia, Bulgaria, March 4, 2019. REUTERS/Stoyan Nenov 

Bulgarian Prime Minister Boyko Borissov and his Russian counterpart Dmitry Medvedev attend an official welcome ceremony in Sofia, Bulgaria, March 4, 2019. REUTERS/Stoyan Nenov 

Bulgarian Prime Minister Boyko Borissov and his Russian counterpart Dmitry Medvedev attend an official welcome ceremony in Sofia, Bulgaria, March 4, 2019. REUTERS/Stoyan Nenov 

Bulgarian Prime Minister Boyko Borissov and his Russian counterpart Dmitry Medvedev attend an official welcome ceremony in Sofia, Bulgaria, March 4, 2019. REUTERS/Stoyan Nenov 

Bulgarian Prime Minister Boyko Borissov and his Russian counterpart Dmitry Medvedev attend a wreath laying ceremony during an official welcoming in Sofia, Bulgaria, March 4, 2019. REUTERS/Stoyan Nenov 

Bulgarian Prime Minister Boyko Borissov and his Russian counterpart Dmitry Medvedev attend a wreath laying ceremony during an official welcoming in Sofia, Bulgaria, March 4, 2019. REUTERS/Stoyan Nenov 

Bulgarian Prime Minister Boyko Borissov and his Russian counterpart Dmitry Medvedev attend a wreath laying ceremony during an official welcoming in Sofia, Bulgaria, March 4, 2019. REUTERS/Stoyan Nenov 

Bulgarian Prime Minister Boyko Borissov and his Russian counterpart Dmitry Medvedev attend an official welcome ceremony in Sofia, Bulgaria, March 4, 2019. REUTERS/Stoyan Nenov 

Bulgarian Prime Minister Boyko Borissov and his Russian counterpart Dmitry Medvedev attend an official welcome ceremony in Sofia, Bulgaria, March 4, 2019. REUTERS/Stoyan Nenov 

Bulgarian Prime Minister Boyko Borissov and his Russian counterpart Dmitry Medvedev attend an official welcome ceremony in Sofia, Bulgaria, March 4, 2019. REUTERS/Stoyan Nenov 

Bulgarian Prime Minister Boyko Borissov and his Russian counterpart Dmitry Medvedev attend an official welcome ceremony in Sofia, Bulgaria, March 4, 2019. REUTERS/Stoyan Nenov 

Bulgarian Prime Minister Boyko Borissov and his Russian counterpart Dmitry Medvedev attend an official welcome ceremony in Sofia, Bulgaria, March 4, 2019. REUTERS/Stoyan Nenov 

Bulgarian Prime Minister Boyko Borissov and his Russian counterpart Dmitry Medvedev attend an official welcome ceremony in Sofia, Bulgaria, March 4, 2019. REUTERS/Stoyan Nenov 

Bulgarian Prime Minister Boyko Borissov and his Russian counterpart Dmitry Medvedev attend an official welcome ceremony in Sofia, Bulgaria, March 4, 2019. REUTERS/STOYAN NENOV 

Russian President Vladimir Putin (C), Prime Minister Dmitry Medvedev (L) and Defence Minister Sergei Shoigu take part in a wreath-laying ceremony marking the Defender of the Fatherland Day at the Tomb of the Unknown Soldier by the Kremlin wall in central Moscow, Russia February 23, 2019. Kirill Kudryavtsev/Pool via REUTERS 

Russian President Vladimir Putin and Prime Minister Dmitry Medvedev attend United Russia political party annual convention in Moscow, Russia December 8, 2018. REUTERS/Maxim Shemetov 

Boris Gryzlov (L to R), Russian President Vladimir Putin, Prime Minister Dmitry Medvedev and Andrey Turchak applaud during the United Russia political party annual convention in Moscow, Russia December 8, 2018. REUTERS/Maxim Shemetov 

Russian Prime Minister Dmitry Medvedev adresses United Russia political party annual convention in Moscow, Russia December 8, 2018. REUTERS/Maxim Shemetov 

Russian Prime Minister Dmitry Medvedev adresses United Russia political party annual convention in Moscow, Russia December 8, 2018. REUTERS/Maxim Shemetov 

Russian Prime Minister Dmitry Medvedev adresses United Russia political party annual convention in Moscow, Russia December 8, 2018. REUTERS/Maxim Shemetov 

Russian Prime Minister Dmitry Medvedev adresses United Russia political party annual convention in Moscow, Russia December 8, 2018. REUTERS/Maxim Shemetov 

Russian Prime Minister Dmitry Medvedev adresses United Russia political party annual convention in Moscow, Russia December 8, 2018. REUTERS/Maxim Shemetov 

Russian President Vladimir Putin and Prime Minister Dmitry Medvedev attend United Russia political party annual convention in Moscow, Russia December 8, 2018. REUTERS/Maxim Shemetov 

Russian President Vladimir Putin (L to R), Prime Minister Dmitry Medvedev and Andrey Turchak attend United Russia political party annual convention in Moscow, Russia December 8, 2018. REUTERS/Maxim Shemetov 

Russian President Vladimir Putin and Prime Minister Dmitry Medvedev attend United Russia political party annual convention in Moscow, Russia December 8, 2018. REUTERS/Maxim Shemetov 

Russian President Vladimir Putin and Prime Minister Dmitry Medvedev attend United Russia political party annual convention in Moscow, Russia December 8, 2018. REUTERS/Maxim Shemetov 

Russian President Vladimir Putin and Prime Minister Dmitry Medvedev attend United Russia political party annual convention in Moscow, Russia December 8, 2018. REUTERS/Maxim Shemetov 

Boris Gryzlov (L to R), Russian President Vladimir Putin and Prime Minister Dmitry Medvedev attend United Russia political party annual convention in Moscow, Russia December 8, 2018. REUTERS/Maxim Shemetov 

Vietnamese General Secretary, President Nguyen Phu Trong greets Russian Prime Minister Dmitry Medvedev at the Party's headquarter in Hanoi, Vietnam November 19, 2018. Luong Thai Linh/Pool via REUTERS 

Vietnamese General Secretary, President Nguyen Phu Trong (R) meets Russian Prime Minister Dmitry Medvedev (L) at the Party's headquarter in Hanoi, Vietnam November 19, 2018. Luong Thai Linh/Pool via REUTERS 

Russian Prime Minister Dmitry Medvedev talks to Vietnamese General Secretary, President Nguyen Phu Trong (not pictured) during their meeting at the Party's headquarter in Hanoi, Vietnam November 19, 2018. Luong Thai Linh/Pool via REUTERS 

Vietnamese General Secretary, President Nguyen Phu Trong and Russian Prime Minister Dmitry Medvedev shake hands at the Party's headquarter in Hanoi, Vietnam November 19, 2018. Luong Thai Linh/Pool via REUTERS 

Vietnamese General Secretary, President Nguyen Phu Trong and Russian Prime Minister Dmitry Medvedev shake hands at the Party's headquarter in Hanoi, Vietnam November 19, 2018. Luong Thai Linh/Pool via REUTERS 

Vietnamese General Secretary, President Nguyen Phu Trong (R) meets Russian Prime Minister Dmitry Medvedev (L) at the Party's headquarter in Hanoi, Vietnam November 19, 2018. Luong Thai Linh/Pool via REUTERS 

Russia's Prime Minister Dmitri Medvedev attends a news conference with his Vietnamese counterpart Nguyen Xuan Phuc (not pictured) at the Government Office in Hanoi, Vietnam November 19, 2018. REUTERS/Kham/Pool 

Russia's Prime Minister Dmitri Medvedev attends a news conference with his Vietnamese counterpart Nguyen Xuan Phuc (not pictured) at the Government Office in Hanoi, Vietnam November 19, 2018. REUTERS/Kham/Pool 

Russia's Prime Minister Dmitri Medvedev attends a news conference with his Vietnamese counterpart Nguyen Xuan Phuc at the Government Office in Hanoi, Vietnam November 19, 2018. REUTERS/Kham/Pool 

Russia's Prime Minister Dmitri Medvedev attends a news conference with his Vietnamese counterpart Nguyen Xuan Phuc at the Government Office in Hanoi, Vietnam November 19, 2018. REUTERS/Kham/Pool 

Russian Prime Minister Dmitry Medvedev talks to his Vietnamese counterpart Nguyen Xuan Phuc at the Government office in Hanoi, Vietnam, November 19, 2018. Nhac Nguyen/Pool via REUTERS 

Vietnam's Prime Minister Nguyen Xuan Phuc and his Russian counterpart Dmitry Medvedev review an honor guard during a welcoming ceremony at the Presidential palace in Hanoi, Vietnam, 19 November 2018. Minh Hoang/Pool via REUTERS 

Vietnam's Prime Minister Nguyen Xuan Phuc and his Russian counterpart Dmitry Medvedev review an honor guard during a welcoming ceremony at the Presidential palace in Hanoi, Vietnam, 19 November 2018. Minh Hoang/Pool via REUTERS 

Vietnam's Prime Minister Nguyen Xuan Phuc (R) and his Russia's counterpart Dmitry Medvedev (L) review an honor guard during a welcoming ceremony at the Presidential palace in Hanoi, Vietnam, 19 November 2018. Medvedev is on an official visit to Vietnam from 18 to 19 November 2018. 

Vietnam's Prime Minister Nguyen Xuan Phuc and his Russian counterpart Dmitry Medvedev talk as they walk at the Presidential palace in Hanoi, Vietnam, 19 November 2018. Minh Hoang/Pool via REUTERS