Russia

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Panagiota Tsakiri of Greece holds her national flag and leads her team into the stadium during the opening ceremony of the 2014 Winter Olympics in Sochi, Russia, Friday, Feb. 7, 2014. (AP Photo/Charlie Riedel)

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The Greece team is introduced during the opening ceremony of the 2014 Winter Olympics in Sochi, Russia, Friday, Feb. 7, 2014. (AP Photo/David J. Phillip )

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The CAN-2 sled from Canada takes a turn during a training run for the two-man bobsled at the 2014 Winter Olympics, Thursday, Feb. 6, 2014, in Krasnaya Polyana, Russia. (AP Photo/Michael Sohn)

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One of the Olympic rings fails to open during the opening ceremony of the 2014 Winter Olympics in Sochi, Russia, Friday, Feb. 7, 2014. (AP Photo/David J. Phillip )

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Russian President Vladimir Putin, second from right, and International Olympic Committee President Thomas Bach, centre, wave as they stand alongside United Nations Secretary-General Ban Ki-moon, third from left, during the opening ceremony of the 2014 Winter Olympics in Sochi, Russia, Friday, Feb. 7, 2014. (AP Photo/Mark Humphrey)