U.S. intelligence officials are analyzing the voice on a ISIS video . They are comparing it with the voices of people being watched , officials told ISIS . The 55-minute video released by CNN shows the jihadist leading a mass execution . In the video , jihadist speaks 17th in English , then in Arabic .
U.S. intelligence officials are analyzing the voice on a ISIS video . They are comparing it with the voices of people being watched , officials told CNN . The 55-minute video released by ISIS shows the jihadist leading a mass execution . In the video , jihadist speaks first in Arabic , then in English .