SOCHI, RUSSIA - MAY 10, 2017: Russian President Vladimir Putin is seen during the final ice hockey gala match as part of the 6th Night Hockey League Festival, at Sochi's Bolshoy Ice Dome in Sochi, Russia, on May 10, 2017. 

SOCHI, RUSSIA - MAY 10 : Russia's President Vladimir Putin (Number 11) is seen during the final ice hockey gala match as part of the 6th Night Hockey League Festival, at Sochi's Bolshoy Ice Dome in Sochi, Russia, on May 10, 2017. 

SOCHI, RUSSIA - MAY 10, 2017: Russian President Vladimir Putin is seen during the final ice hockey gala match as part of the 6th Night Hockey League Festival, at Sochi's Bolshoy Ice Dome in Sochi, Russia, on May 10, 2017. 

SOCHI, RUSSIA - MAY 10 : Russia's President Vladimir Putin is seen during the final ice hockey gala match as part of the 6th Night Hockey League Festival, at Sochi's Bolshoy Ice Dome in Sochi, Russia, on May 10, 2017. ( Nataliy Zemboska - Anadolu Agency )

SOCHI, RUSSIA - MAY 10, 2017: A woman holds a portrait of Russia's President Vladimir Putin during the final ice hockey gala match as part of the 6th Night Hockey League Festival, at Sochi's Bolshoy Ice Dome in Sochi, Russia, on May 10, 2017. 

SOCHI, RUSSIA - MAY 10, 2017: Russian Defence Minister Sergei Shoigu (R) is seen during the final ice hockey gala match as part of the 6th Night Hockey League Festival, at Sochi's Bolshoy Ice Dome in Sochi, Russia, on May 10, 2017. 

SOCHI, RUSSIA - MAY 10, 2017: Russian President Vladimir Putin is seen during the final ice hockey gala match as part of the 6th Night Hockey League Festival, at Sochi's Bolshoy Ice Dome in Sochi, Russia, on May 10, 2017. 

SOCHI, RUSSIA - MAY 10, 2017: Russian President Vladimir Putin is seen during the final ice hockey gala match as part of the 6th Night Hockey League Festival, at Sochi's Bolshoy Ice Dome in Sochi, Russia, on May 10, 2017. 

SOCHI, RUSSIA - MAY 10, 2017: Russian President Vladimir Putin is seen during the final ice hockey gala match as part of the 6th Night Hockey League Festival, at Sochi's Bolshoy Ice Dome in Sochi, Russia, on May 10, 2017. 

SOCHI, RUSSIA - MAY 10, 2017: Russian President Vladimir Putin is seen during the final ice hockey gala match as part of the 6th Night Hockey League Festival, at Sochi's Bolshoy Ice Dome in Sochi, Russia, on May 10, 2017. 

SOCHI, RUSSIA - MAY 10, 2017: Russian President Vladimir Putin is seen during the final ice hockey gala match as part of the 6th Night Hockey League Festival, at Sochi's Bolshoy Ice Dome in Sochi, Russia, on May 10, 2017. 

SOCHI, RUSSIA - MAY 10 : Russia's President Vladimir Putin (L) is seen during the final ice hockey gala match as part of the 6th Night Hockey League Festival, at Sochi's Bolshoy Ice Dome in Sochi, Russia, on May 10, 2017. ( Nataliy Zemboska - Anadolu Agency )

SOCHI, RUSSIA - MAY 10, 2017: Russian President Vladimir Putin is seen during the final ice hockey gala match as part of the 6th Night Hockey League Festival, at Sochi's Bolshoy Ice Dome in Sochi, Russia, on May 10, 2017. 

SOCHI, RUSSIA - MAY 10, 2017: Russian President Vladimir Putin is seen during the final ice hockey gala match as part of the 6th Night Hockey League Festival, at Sochi's Bolshoy Ice Dome in Sochi, Russia, on May 10, 2017. 

SOCHI, RUSSIA - MAY 10, 2017: Russian President Vladimir Putin is seen during the final ice hockey gala match as part of the 6th Night Hockey League Festival, at Sochi's Bolshoy Ice Dome in Sochi, Russia, on May 10, 2017. 

SOCHI, RUSSIA - MAY 10, 2017: Russian President Vladimir Putin is seen during the final ice hockey gala match as part of the 6th Night Hockey League Festival, at Sochi's Bolshoy Ice Dome in Sochi, Russia, on May 10, 2017. 

SOCHI, RUSSIA - MAY 10, 2017: Russian President Vladimir Putin is seen during the final ice hockey gala match as part of the 6th Night Hockey League Festival, at Sochi's Bolshoy Ice Dome in Sochi, Russia, on May 10, 2017.