An Iraqi Shiite fighter from the Popular Mobilization units holds an Islamic State (IS) group patch as he inspects a council building in the city of Baiji, north of Tikrit, in the Salahaddin province, on June 7, 2015. Iraqi forces advanced against the IS jihadist group in Baiji as they battled to retake the strategic town for a second time. AFP PHOTO / AHMAD AL-RUBAYE        (Photo credit should read AHMAD AL-RUBAYE/AFP via Getty Images)