Iraqi forces advanced on three fronts against ISIS Sunday, flushing out pockets of resistance in and around Baiji and closing in on Ramadi and Hawijah, officers said.

Iraqi security and allied paramilitary forces last week launched a broad offensive on Baiji, about 200 kilometers (120 miles) north of Baghdad.

The city and nearby refinery — the country’s largest — have been one of the worst flashpoints since ISIS launched a sweeping offensive across Iraq’s Sunni Arab heartland in June 2014. […]