Some of the deadliest militant attacks in Iraq since the U.S.-led invasion in March 2003:
_ Aug. 14, 2007 _ Four suicide truck bombs detonate simultaneously in the small village of Qahataniya, killing more than 500 Yazidis, a Kurdish-speaking sect and religious minority.
_ Nov. 23, 2006 _ Mortar rounds and five car bombs kill 215 people in Baghdad's Shiite neighborhood of Sadr City.
_ April 18, 2007 _ At least 183 are killed when four large bombs explode in mainly Shiite locations of Baghdad.
_ March 2, 2004 _ Coordinated blasts from suicide bombers, mortars and planted explosives strike Shiite Muslim shrines in Karbala and in Baghdad, killing at least 181 people.
_ Sept. 14, 2005 _ More than a dozen coordinated bombings rip through Baghdad, killing 178 people.
_ July 7, 2007 _ A suicide truck bomb kills 160 in a Turkomen village south of Kirkuk.
_ Oct. 25, 2009 _ Two powerful car bombs explode in downtown Baghdad, killing at least 155 people in an apparent attempt to target the fragile city's government offices.
_ Feb. 3, 2007 _ A suicide truck bomber at a market in a predominantly Shiite area of Baghdad kills 137.
_ Dec. 8, 2009: _ A series of coordinated attacks strike Baghdad, killing at least 127.
_ Aug. 19, 2009 _ Suicide bombers hit the Finance and Foreign ministries, killing more than 100 people.