At least 143 Iraqis were killed in terrorist attacks today in Baghdad and Karbala, coalition officials said at a Baghdad news conference. Suicide bombers attacked Shiia Muslims as they observed Ashoura, the holiest day in the Shiia calendar. Ashoura commemorates the death in battle of Hussain, the third Shiite Imam, in A.D. 680. The Iraqi Governing Council wasted no time in attributing the blasts to Abu Musab Zarqawi, a terrorist with ties to al Qaeda. He wrote a letter to al Qaeda leaders, detailing how he would bring on a sectarian civil war in Iraq, which was intercepted by the...