Iraq's battle with Al Qaeda continues

Iraq is being hit once again by a wave of attacks - claimed by groups linked to al-Qaeda. The armed group was forced back after Sunni tribesman turned against them to fight alongside US forces. But many now many fear al-Qaeda is making a return. In an Al Jazeera special series, we take a look at Iraq one year after US troops left the country. Al Jazeera's Jane Arraf reports from Samara.