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FILE- In this June 9, 2013 photo provided by The Guardian Newspaper in London, former NSA contractor Edward Snowden is shown. Four journalists, Glenn Greenwald, Ewen MacAskill and Laura Poitras of The Guardian and Barton Gellman of The Washington Post, will receive the George Polk Award for National Security Reporting for their stories based on secret documents that Snowden released. (AP Photo/The Guardian, Glenn Greenwald and Laura Poitras, File) MANDATORY CREDIT

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