A multiple bomb attack that killed at least 33 people at a campaign rally for a militant Shiite group likely unleashed a series of apparent sectarian attacks in Iraq, signaling the start of a new wave of Sunni-Shiite bloodletting ahead of elections next week, security officials said Saturday. An al-Qaida breakaway group, the Islamic State of Iraq and the Levant, claimed responsibility for Friday’s attack on the Baghdad rally, which drew about 10,000 backers of Asaib Ahl al-Haq. It said on a militant website that the bombings were to avenge what it called the killing of Sunnis and their forced removal from their homes by Shiite militias. The authenticity of the claim could not be independently verified. A senior Asaib Ahl al-Haq official said the 33 dead included 10 group members who had fought in the Syrian civil war. Its members fight with forces loyal to […]