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Soldiers stand guard at a market in N'Djamena following a suicide bomb attack on July 11, 2015. At least 14 people were killed in a suicide bomb attack at a crowded market in Chad's capital today just days after Boko Haram claimed a previous bombing in the city that left 38 people dead. The attack in N'Djamena by a man disguised as a woman in a full-face veil came after a botched bombing of a bus station in the restive capital of Nigeria's Borno state, Maiduguri, which killed two pedestrians.  AFP PHOTO / BRAHIM ADJI        (Photo credit should read BRAHIM ADJI/AFP/Getty Images)
Soldiers stand guard at a market in N'Djamena following a suicide bomb attack on July 11, 2015. At least 14 people were killed in a suicide bomb attack at a crowded market in Chad's capital today just days after Boko Haram claimed a previous bombing in the city that left 38 people dead. The attack in N'Djamena by a man disguised as a woman in a full-face veil came after a botched bombing of a bus station in the restive capital of Nigeria's Borno state, Maiduguri, which killed two pedestrians.  AFP PHOTO / BRAHIM ADJI        (Photo credit should read BRAHIM ADJI/AFP/Getty Images)

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Deconstructing Boko Haram's bombing tactics

Boko Haram is employing new and more harrowing tactics to sow seeds of terror in Nigeria. CNN's Robyn Kriel reports.

Deconstructing Boko Haram's bombing tactics

Boko Haram is employing new and more harrowing tactics to sow seeds of terror in Nigeria. CNN's Robyn Kriel reports.