[The Conversation Africa] Abubakar Shekau, the erstwhile leader of the terrorist group Jama'at Ahl al-Sunna li al-Da'wa wa al-Jihad (JAS), died in 2021. The west African group, also known as Boko Haram, then fell into obscurity while its breakaway faction, Islamic State West Africa Province (ISWAP), steadily rose.