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.