Documents leaked by former U.S. National Security Agency (NSA) contractor Edward Snowden suggest that the spy agency eavesdropped on a Russian mob kingpin in an effort to determine his possible ties to President Vladimir Putin.
Radio Free Europe/Radio Liberty: Report says NSA tapped phone of Russian crime boss to probe for Putin ties
Russian President Vladimir Putin gestures while speaking with the media after his annual televised call-in show in central Moscow on April 14, 2016.
