Debris covers the base of a destroyed minaret at the Askariya Shrine on June 13 in the northern Iraqi city of Samarra. Two minarets at the shrine were destroyed in the attack that was quickly blamed on al-Qaida. Last year, the shrine's Golden Dome was destroyed, triggering an increase in Sunni-Shiite violence. The Askariya Shrine is one of the most revered in Shiite Islam.