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Tamerlan Tsarnaev, his family and a possible pull toward radicalization


NBC’s Adrienne Mong joins Martin Bashir by phone from Russia to help stitch together what we know about Tamerlan Tsarnaev, his family, his possible radicalization, and his travels in Russia last year; then, Georgetown’s Anne Speckhard and former Secret Service agent Dan Bongino fill out the analysis of what may have attracted the Tsarnaev brothers to Chechnya’s rebels.