08/20/2013 06:19 pm ET Updated Oct 20, 2013

U.S. Doesn't Know What Snowden Took, Sources Say

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More than two months after documents leaked by former contractor Edward Snowden first began appearing in the news media, the National Security Agency still doesn’t know the full extent of what he took, according to intelligence community sources, and is “overwhelmed” trying to assess the damage.

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