Boko Haram leader Abubakar Shekau speaks at an unknown location in this still image taken from an undated video released by Nigerian Islamist rebel group Boko Haram. REUTERS/Boko Haram handout via ... more 
Boko Haram leader Abubakar Shekau speaks at an unknown location in this still image taken from an undated video released by Nigerian Islamist rebel group Boko Haram. REUTERS/Boko Haram handout via Reuters TV less 
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Reuters | Photo By REUTERS TV / Reuters
Mon, Jul 14, 2014 2:53 AM EDT