"To the despot Nigerian government: Die with envy. I'm not dead," Shekau says in the video. That terrorist organization has said it is supporting Shekau's rival, Abu Musab al-Barnawi, as the legitimate leader of the Nigerian ISIS-affiliated terrorist movementA Boko Haram video shows embattled leader Abubakar ShekauThe video was a response to the Nigerian army's claim that it "fatally wounded" Shekau in a raid August 19. The army dismissed the video Sunday as evidence of Shekau's desperation. "The video has shown beyond all reasonable doubt the earlier suspicion that the purported factional terrorists' group leader is mentally sick and unstable," the army statement said.

Source: CNN September 25, 2016 21:22 UTC