Suicide bombers killed 24 policemen in Baghdad on Thursday, causing more carnage after al Qaeda in Iraq declared war on the country’s majority Shi’ite Muslims and anyone linked to the U.S.-backed government. Fears of civil war have grown among Iraqis in the run-up to an October 15 referendum on a disputed new constitution that is backed by the Shi’ite- and Kurdish-led government. Sunni politicians oppose the charter.Full Story