a raid on the Austrian cross-country ski team's residence during the Games where they seized blood-doping specimens and equipment. This event followed the pre-Olympics suspension of 12 cross-country skiers who tested positive for unusually high levels of haemoglobin, which is evidence of blood doping. The 2014 Winter Olympics in Sochi's Russian Doping Scandal has resulted in the International Olympic Committee to begin disciplinary proceedings against 28 (later increased to 46) Russian athletes who competed at the 2014 Winter Games in Sochi, Russia, acting on evidence that their urine samples were tampered with. Cold War The Winter Olympics have been an ideological front in the Cold War since the Soviet Union first participated at the 1956 Winter Games. It did not take long for the Cold War combatants to discover what a powerful propaganda tool the Olympic Games could be. The advent of the state-sponsored "full-time amateur athlete" of the Eastern Bloc countries further eroded the ideology of the pure amateur, as it put the self-financed amateurs of the Western countries at a disadvantage. The Soviet Union entered teams of athletes who were all nominally students, soldiers, or working in a profession, but many of whom were in reality paid by the state to train on a full-time basis. Nevertheless, the IOC held to the traditional rules regarding amateurism until the '90s. The Cold War created tensions amongst countries allied to the two superpowers. The strained relationship between East and West Germany created a difficult political situation for the IOC. Because of its role in World War II, Germany was not allowed to compete at the 1948 Winter Olympics. In 1950 the IOC recognised the West German Olympic Committee, and invited East and West Germany to compete as a unified team at the 1952 Winter Games. East Germany declined the invitation and instead sought international legitimacy separate from West Germany. In 1955 the Soviet Union recognised East Germany as a sovereign state, thereby giving more credibility to East Germany's campaign to become an independent participant at the Olympics. The IOC agreed to provisionally accept the East German National Olympic Committee with the condition that East and West Germans compete on one team. The situation became tenuous when the Berlin Wall was constructed by East Germany in 1962 and Western European nations began refusing visas to East German athletes. The uneasy compromise of a unified team held until the 1968 Grenoble Games