The Islamic State West African Province (ISWAP) militant group has alleged that Abubakar Shekau, leader of rival Nigerian militant Islamist group Boko Haram, detonated his explosives vest killing himself instantly. According to ISWAP which broke away from Shekau’s Boko Haram faction in 2016, Shekau died around May 18 after detonating an explosive device after he...