Alliance between Boko Haram & ISIL

(CNN)For sheer cruelty, they are well matched. They also share an apocalyptic "end-of-days" vision. Now there are signs that Boko Haram -- the most feared group in West Africa -- may be edging toward a formal pledge of allegiance to the self-declared Caliph of the Islamic State, Abu Bakr al-Baghdadi.

Boko Haram + ISIL 

Boko Haram employ ISIL's strategy 

Taken from CNN