Iraqi security forces on Tuesday deployed tanks and artillery around Ramadi to confront Islamic State fighters who have captured the city in a major defeat for the Baghdad government and its Western backers. After Ramadi fell on Sunday, Shi'ite militiamen allied to the Iraqi army had advanced to a nearby base in preparation for a counterattack on the city, which lies in the Sunni Muslim province of Anbar, just 110 km (70 miles) northwest of Baghdad. As pressure mounted for action to retake the city, a local government official urged Ramadi residents to join the police and the army for what the Shi'ite militiamen said would be the "Battle of Anbar".