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WASHINGTON, DC - JANUARY 30: Russian opposition leader and former Deputy Prime Minister Boris Nemtsov speaks during a news conference on 'Corruption and Abuse in Sochi Olympics' January 30, 2014 at the National Press Club in Washington, DC. The Institute of Modern Russia held the news conference to launch a new online interactive 'corruption guide' to the Sochi Olympics and the release of a report on 'Winter Olympics in the Sub-Tropics,' which conducted by Nemtsov and Martynyuk. (Photo by Alex Wong/Getty Images)
WASHINGTON, DC - JANUARY 30: Russian opposition leader and former Deputy Prime Minister Boris Nemtsov speaks during a news conference on 'Corruption and Abuse in Sochi Olympics' January 30, 2014 at the National Press Club in Washington, DC. The Institute of Modern Russia held the news conference to launch a new online interactive 'corruption guide' to the Sochi Olympics and the release of a report on 'Winter Olympics in the Sub-Tropics,' which conducted by Nemtsov and Martynyuk. (Photo by Alex Wong/Getty Images)

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A friend of Boris Nemtsov, who was shot dead near the Kremlin in Moscow, speaks to CNN's Poppy Harlow about the opposition movement in Russia.

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A friend of Boris Nemtsov, who was shot dead near the Kremlin in Moscow, speaks to CNN's Poppy Harlow about the opposition movement in Russia.