Abubakar Shekau, pledge of allegiance to ISIS, March 7, 2015

Boko Haram
“We announce our allegiance to the Caliph ... and will hear and obey in times of difficulty and prosperity, in hardship and ease. We call upon Muslims everywhere to pledge allegiance to the Caliph.” “Nigeria's Boko Haram pledges allegiance to Islamic State - audio clip,” Reuters, March 8, 2015, http://uk.reuters.com/article/2015/03/08/uk-nigeria-boko-haram-caliphate-idUKKBN0M30TA20150308.
Abubakar Shekau