The Islamic State group Thursday confirmed the death of its leader Abu Ibrahim al-Qurashi, more than a month after his demise, and named Abu Hasan al-Hashemi al-Qurashi as his successor. Little is known about the new leader, who will serve as the jihadist group's third chief since its inception. IS personnel have "pledged allegiance" to "Abu Hasan al-Hashemi al-Qurashi as an emir over believers and the caliph of Muslims," the group's spokesperson said in an audio recording released on its social media channels. The recording confirmed the death of the former IS chief along with the group's ex-spokesman. "Abu Ibrahim...