U.S.-backed Iraqi forces close in on IS-held Mosul government buildings

By Isabel Coles and Maher ChmaytelliMOSUL/BAGHDAD, Iraq (Reuters) - U.S.-backed Iraqi forces on Tuesday battled their way to within firing range of Mosul's main government buildings, a major target in the offensive to dislodge Islamic State militants from their remaining stronghold in the western side of the city.Terrified civilians were fleeing the fighting, some toward government lines, often under militant fire.Iraqi forces captured the eastern side of Mosul in January after 100 days of fight