has resurfaced. heard in a new audio message calling on muslims to join his terror group and take up arms. that comes amid claims that al bag daddieal al baghdadi s second in command was killed in an air strike. reporter: no reason to doubt it s the voice of the isis leader. it temperaturing you he s alive, and two, at least not injured or incapacitated enough he couldn t make a new threat and the fact is u.s. officials have always doubted he was seriously wounded in the strike in february, but in addition to that talk about the threat he makes in this because in this audio statement he s calling on muslims all over the world, including here in the u.s. to carry out attacks where they can. he says there is no excuse for any muslim capable of carrying a weapon allah commanded him and