In this Thursday, Nov. 13, 2014, file photo, Abdul Amir al-Shammari, Baghdad Operations Commander, speaks during an interview with The Associated Press in the heavily fortified Green Zone in Baghdad, Iraq. As Washington warns of a drawn-out fight against the Islamic State group and the U.S. administration looks to send more American troops to help Iraq in the war against the extremists, Baghdad has offered its top war room as a model for a future joint U.S.-Iraqi command headquarters. Photo: (AP Photo/Khalid Mohammed) / AP