State-sanctioned Shia militias launched an assault on the Islamic State group west of the Iraqi city of Mosul on Saturday but reiterated that they would not enter the Sunni majority city. Jaafar al-Husseini, a spokesperson for the Hezbollah Brigades, said they launched an offensive Saturday along with other large militias toward the town of Tel Afar, which had a Shia majority before it fell to IS in 2014. Iranian forces are advising the fighters and Iraqi aircraft are providing airstrikes, he said. Iraq launched a massive operation to retake militant-held Mosul, its second largest city, last week. The involvement of the Shia militias has raised concerns the battle could aggravate sectarian divisions. The Mosul offensive involves more than 25,000 soldiers, Federal Police, Kurdish fighters, Sunni tribesmen and the Shia militias, which operate under an umbrella organization known as the Popular Mobilization Units. Many of the militias were originally formed after the 2003 US-led inv...