Kammala wannan magana: Kungiyar jihadi ta Boko Haram ta fara
tayar da kayar baya tare da tayar da hankali a shekara ta 2009. Sun kai hare-hare da yawa tun daga lokacin, suna kashe dubban mutane. A tsakiyar shekarun 2010, tawayen su ya fadada zuwa Kamaru, Chadi da Nijar.