IN THE VIDEO, Sami Osmakac is tall and gaunt, with jutting cheekbones and a scraggly beard. He sits cross-legged on the maroon carpet of the hotel room, wearing white cotton socks and pants that rise up his legs to reveal his thin, pale ankles. An AK-47 leans against the closet door behind him. What appears to be a suicide vest is strapped to his body. In his right hand is a pistol.

"Recording," says an unseen man behind the camera.

"This video is to all the Muslim youth and to all the Muslims worldwide," Osmakac says, looking straight into the lens. "This is a call to the truth. It is the call to help and aid in the party of Allah … and pay him back for every sister that has been raped and every brother that has been tortured and raped."