People gather at the scene of a car bomb attack in the Sadr City neighborhood in Baghdad, Iraq, Thursday, May 16, 2013. A car bomb explosion in a sprawling Shiite neighborhood of Baghdad has killed and wounded dozens of people, officials said. (AP Photo/ Karim Kadim)
People gather at the scene of a car bomb attack in the Sadr City neighborhood in Baghdad, Iraq, Thursday, May 16, 2013. A car bomb explosion in a sprawling Shiite neighborhood of Baghdad has killed and wounded dozens of people, officials said. (AP Photo/ Karim Kadim)
Armed Kurdish fighters from the Kurdistan Workers Party (PKK) stand at attention after arriving in the Heror region of Iraq, northwest of Baghdad, on Tuesday, May 14, 2013. (AP Photo/Ceerwan Aziz)
** FILE ** U.S. Army soldiers with 1st Brigade, 1st Cavalry Division stand near their armored vehicles before they start their journey home at Contingency Operating Site Kalsu, about 55 kilometers (35 miles) south of Baghdad, Iraq on Monday, Dec. 5, 2011. (AP Photo/Khalid Mohammed)
Paula Broadwell, who ended up with more than a professional relationship with David H. Petraeus, conducted extensive interviews with critics and supporters for her book. “All In,” however, has been described as “part hagiography and part defense” of Mr. Petraeus’ strategy in Iraq and Afghanistan. (Associated Press)
** FILE ** Civilians gather at the scene of a car bomb attack in east Baghdad's neighborhood of Kamaliya, Iraq, Monday, April 15, 2013. Five car bombs exploded in Iraqi areas dominated by Shiites on Monday, April 29, 2013, killing 26 civilians and injuring dozens more. (AP Photo/ Khalid Mohammed)
** FILE ** Civilians gather at the scene of a car bomb attack in east Baghdad's neighborhood of Kamaliya, Iraq, Monday, April 15, 2013. Five car bombs exploded in Iraqi areas dominated by Shiites on Monday, April 29, 2013, killing 26 civilians and injuring dozens more. (AP Photo/ Khalid Mohammed)
Docent Patricia Flynn demonstrates an interactive with information about conflicts in Afghanistan and Iraq during a tour of the George W. Bush Presidential Center Wednesday, April 24, 2013, in Dallas. More than 8,000 people are expected to attend the invitation-only dedication of the center, Thursday, April 25, which will house the presidential library and museum along with the 43rd presidentÃs policy institute. It opens to the public on May 1. (AP Photo/David J. Phillip)
Iraqis display their ink-stained fingers at a polling center during the country's provincial elections in Baghdad, Iraq, Saturday, April 20, 2013. (AP Photo/ Karim Kadim)
