Soviet hockey legend Vladislav Tretiak (L) and NHL Players Association president Donald Fehr (L) listen to the national anthems of Canada and Russia in Red square in Moscow on February 24, 2012 during a ceremony. Top hockey players and former stars will face off on February 25 in Moscow on the invitation of Russian strongman Vladimir Putin to celebrate the 40th anniversary of the Cold War era Summit Series between the Canadian and Soviet teams. The Summit Series was the first ever meeting between the Soviet and an NHL-inclusive Canadian national ice hockey teams and an eight-game series was held in September 1972. In 1970s the Cold War between West and East was in full swing with intense feelings of nationalism were aroused by the contest both in Canada and the Soviet Union. The clash between the all-conquering Soviet Red Machine and Canadian NHL professional players represented the confrontation of two systems, which both desperately desired to prove their supremacy. AFP PHOTO/ ALEXANDER NEMENOV (Photo credit should read ALEXANDER NEMENOV/AFP/Getty Images)