Security forces entered Iraq’s largest refinery for the first time on Tuesday after months of battling Islamic State militants who had surrounded it, a police colonel said.

Police sources said security forces were clearing out mines from the refinery complex and had moved to an area just to the northwest where they faced some resistance from Islamic State militants. The insurgents still have a presence there.

Complete recovery of the Baiji facility could provide critical momentum for government forces charged with restoring stability in a country facing its worst security crisis since dictator Saddam Hussein was toppled in 2003. […]