Journalists gather outside the London headquarters of Orbis Business Intelligence, the company co-owned by former British intelligence officer Christopher Steele, on Thursday. Leon Neal/Getty Images hide caption

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From Civilian To Spy: How An Average Guy Helped Bust A Russian Agent

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Some researchers have begun to question the notion that dolphins are the super-intelligent creatures they've been made out to be. Pavel Golovkin/AP hide caption

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Pavel Golovkin/AP

Dolphins: Adorable, Playful, Not As Smart As You Might Think

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Director of National Intelligence James Clapper (center), accompanied by FBI Director Robert Mueller (left) and CIA Director John Brennan, testifies on Capitol Hill on March 12, 2013. When questioned, Clapper said the NSA did not collect data on Americans. He later acknowledged his response was "clearly erroneous." Susan Walsh/AP hide caption

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Susan Walsh/AP

The Challenge Of Keeping Tabs On The NSA's Secretive Work

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Lt. Gen. Michael Flynn, the director of the Defense Intelligence Agency, testifies before the Senate Armed Services Committee last month. Lauren Victoria Burke/AP hide caption

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Lauren Victoria Burke/AP

U.S. Knew Of 'Imminent' Move In Crimea, Top Official Says

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