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Submission + - NSA can retrieve, replay all phone calls from a country from the past 30 days. (washingtonpost.com)

An anonymous reader writes: The National Security Agency has built a surveillance system capable of recording “100 percent” of a foreign country’s telephone calls, enabling the agency to rewind and review conversations as long as a month after they take place, according to people with direct knowledge of the effort and documents supplied by former contractor Edward Snowden.
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NSA can retrieve, replay all phone calls from a country from the past 30 days.

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