The battle for Iraq, between Sunni militant groups and Shiite-dominated government forces, is not just about Iraq. Journalist Dexter Filkins says its could engulf much of the Middle East and create another terrorism sanctuary, similar to Afghanistan before 9/11.The battle for Iraq, between Sunni militant groups and Shiite-dominated government forces, is not just about Iraq. Journalist Dexter Filkins says its could engulf much of the Middle East and create another terrorism sanctuary, similar to Afghanistan before 9/11.