A few weeks ago, a person inside Mosul began to send text messages to Iraqi military intelligence in Baghdad.
Abu Bakr al-Baghdadi, the leader of Islamic State, “has become intemperate,” said the early November message, written by an informant inside the city who has contact with the group but is not a member of it.
“He has cut down on his movements and neglects his appearance,” the message read. “He lives underground and has tunnels that stretch to different areas. He doesn’t sleep without his suicide bomber vest so he can set it off if he’s captured.”