August 13, 2015 | 12:07 GMT Chadian President Idriss Deby said Aug. 12 that Nigerian jihadist group Boko Haram, which now calls itself Wilayat al-Sudan al-Gharbi, has elected a new leader, heightening speculation that the previous chief, Abubakar Shekau, may have been killed, This Day Live reported Aug. 13. The…