Some of the deadliest attacks in Iraq

Some of the deadliest militant attacks in Iraq since the U.S.-led invasion in March 2003:

- 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.

- Aug. 14, 2007 - Four suicide truck bombs detonate simultaneously in the small village of Qahataniya, killing more than 500 Yazidis, a small Kurdish-speaking sect and religious minority.

- July 7, 2007 - A suicide truck bomb kills 160 in a Turkomen village south of Kirkuk.

- April 18, 2007 - At least 183 are killed when four large bombs explode in mainly Shiite locations of Baghdad.

- March 27, 2007 - Truck bombs hit markets in the northwestern city of Tal Afar, killing at least 152 people.

- Feb. 3, 2007 - A suicide truck bomber at a market in a predominantly Shiite area of Baghdad kills 137.

- Nov. 23, 2006 - Mortar rounds and five car bombs kill 215 people in Baghdad's Shiite neighborhood of Sadr City.

- Sept. 14, 2005 - More than a dozen coordinated bombings rip through Baghdad, killing 178 people.

- 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.