IRBIL, Iraq — Iraqi forces appear poised to launch their most complex anti-IS operation to date: retaking the country's second-largest city of Mosul. While the country's military has won a string of territorial victories that have pushed the Islamic State group out of more than half the territory the group once held, some Iraqi officials worry that the Mosul fight has been rushed and if the city is retaken without a plan to broker a peace, it could lead to more violence.
Mosul fell to the Islamic State group in June of 2014, when the extremist group blitzed across northern and western Iraq, overrunning nearly a third of the country and plunging Iraq into its most critical political and security crisis since the U.S.-led invasion in 2003.
11:35 As caliphate crumbles, Islamic State lashes out in Iraq6
07:14 In parts of Mosul, a semblance of normality despite war13
10:08 Air raid targeting IS militant kills up to 30 in Iraq's Mosul: residents16
08:42 Iraqi forces enter Mosul University, tactical achievement in ISIS battle20