...the Islamic State (IS) organization... the Islamic State in West Africa (Iswap) group... emerged from a split from Boko Haram... [which] developed in northeastern Nigeria from 2009, before spreading to neighboring countries, Cameroon, Niger and Chad. Since that date, more than 36,000 people (mainly in Nigeria) have been killed, and three million have had to flee their homes, according to the UN.
How much manpower do they have?