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A miltary convoy drives in the city of Bosso on June 17, 2016 following attacks by Boko Haram fighters in the region. Boko Haram on June 9 attacked a military post in Bosso in Niger's Diffa region, killing 26 soldiers. / AFP / ISSOUF SANOGO (Photo credit should read ISSOUF SANOGO/AFP/Getty Images)

A miltary convoy drives in the city of Bosso on June 17, 2016 following attacks by Boko Haram fighters in the region.

Boko Haram on June 9 attacked a military post in Bosso in Niger's Diffa region, killing 26 soldiers. / AFP / ISSOUF SANOGO        (Photo credit should read ISSOUF SANOGO/AFP/Getty Images)