Tamerlan Tsarnaev's time in Russia raises questions

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Tamerlan Tsarnaev's time in Russia raises questions

by CBSTV Videos 1:45 mins

Tamerlan Tsarnaev's time in Russia raises questions

by CBSTV Videos 1:45 mins

Tamerlan Tsarnaev's six-month visit to the Dagestan and Chechnya regions of Russia may contain clue into what motivated he and Dzhokhar's attack on the Boston Marathon. Charlie D'Agata reports.

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