 boko haram kii ye ji awọn akẹkọ gbe eleyi to mu ki oju orilẹede agbaye ṣi si ọdọ rẹ lọdun 2014, lẹyin to ji nnkan bii ọọdunrun akẹkọbinrin gbe nileewe kan to wa ni ilu chibok nipinlẹ borno, ipinlẹ ti boko haram ti kọkọ di agbebọn. 