A Shiite fighter strands guard next to followers of Shiite cleric Muqtada al-Sadr attending open-air Friday prayers in the Shiite stronghold of Sadr City, Baghdad, Iraq, Friday, Aug. 8, 2014. (AP Photo/Karim Kadim)

President authorizes air strikes in Iraq

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President Barack Obama says he's authorized the U.S. military to carry out airstrikes in Iraq against Islamic militants if they advance towa…