From the official release by the NHL and NHLPA:
TEAM RUSSIA NAMES 16 PLAYERS TO WORLD CUP OF HOCKEY 2016 ROSTER
TORONTO (March 2, 2016) -- The Russian Ice Hockey Federation announced today the first 16 players named to its roster for the World Cup of Hockey 2016, the best-on-best international hockey championship from Sept. 17 to Oct. 1, 2016, in Toronto.
Team Russia
F Nikita Kucherov, Tampa Bay Lightning
F Evgeny Kuznetsov, Washington Capitals
F Vladislav Namestnikov, Tampa Bay Lightning
F Alex Ovechkin, Washington Capitals
F Artemi Panarin, Chicago Blackhawks
Eight teams -- Team Canada, Team Czech Republic, Team Finland, Team Russia, Team Sweden, Team USA, Team Europe and Team North America -- will compete in the two-week tournament, featuring more than 150 of the best players in the NHL.