in truth, Boko Haram didn't vanish once the 2009 raid but instead went “underground” and regrouped underneath the leadership of Abubakar Shekau. Yusuf had named Shekau as his second in command through his interrogation in 2009, though some report that Shekau’s ascent was briefly contested in just Boko Haram. “It’s a combination of elemen