Brent Stirton/Getty Images
Gen. David Petraeus poses for a photo on June 17, 2004, in Baghdad, Iraq. Petraeus, the retired four-star general who led the U.S. military campaigns in Iraq and Afghanistan, resigned Friday, Nov. 9, 2012 as director of the CIA after admitting he had an extramarital affair.
AP Images/Eddie Mulholland/Rex Features
Gen. David Petraeus poses for a photo on July 21, 2011, in London.
AP Images/Paul J. Richards
Gen. David Petraeus conducts a question and answer session with the media, July 9, 2011, at Camp Eggers in Kabul, Afghanistan.
Chris Hondros/Getty Images
Gen. David Petraeus gives his first press conference since taking over command of US forces in Iraq, March 8, 2007, in the Green Zone in Baghdad, Iraq.
Chris Hondros
Gen. David Petraeus chats with troops during a visit to a forward operating base, July 7, 2007 in Bacouba, Iraq.
Chip Somodevilla/Getty Images
Gen. David Petraeus (R) tells members of the Senate Armed Services Committee that he sees a possibility of troop reductions this fall during his confirmation hearing, May 22, 2008, in Washington, DC.
AP Photo/Mark Wilson
Gen. David Petraeus participates in a Senate Foreign Relations Committee hearing on Capitol Hill, Dec. 9, 2009, in Washington, DC.
Chris Hondros/Getty Images
Gen. David Petraeus listens to a briefing about the security situation in Ramadi and Anbar province, July 7, 2007, at Camp Ramadi in Iraq.
Mark Wilson
Gen. David Petraeus speaks after briefing lawmakers on Capitol Hill, April 25, 2007, in Washington, DC.
Chris Hondros/Getty Images
Gen. David Petraeus talks with an Iraqi man in the Shorja market area of downtown Baghdad while on foot patrol to meet shopkeepers and other Iraqis, March 3, 2007, in Baghdad, Iraq.
Chris Hondros/Getty Images
Gen. David Petraeus prepares to embark on a foot patrol to meet shopkeepers and other Iraqis in two Iraqi neighborhoods, March 3, 2007, in Baghdad, Iraq.
AP Images/Cliff Owen
In this June 23, 2011, photo, Holly Petraeus looks on as her husband, then-CIA Director nominee Gen. David Petraeus, testifies before the Senate Intelligence Committee on Capitol Hill in Washington. Gen.
Spencer Platt/Getty Images
Gen. David Petraeus walks the floor of the New York Stock Exchange to ring the Opening Bell as the CIA Commemorates it's 65th Anniversary on Sept. 18, 2012, in New York City.
Brent Stirton/Getty Images
Gen. David Petraeus poses for a photo on June 21, 2004, in Najaf, Iraq.
Brent Stirton/Getty Images
Gen. David Petraeus poses for a photo on June 21, 2004, in Najaf, Iraq.
Chris Hondros/Getty Images
Gen. David Petraeus meets soldiers on the flightline of Forward Base Wilson after he arrived for a brief visit, Oct. 7, 2010, west of Kandahar, Kandahar Province, Afghanistan.
Brendan Smialowski/Getty Images
President Barack Obama (L) listens while Gen. David Petraeus speaks in the East Room of the White House, April 28, 2011, in Washington, DC.
Brendan Smialowski/Getty Images
Gen. David Petraeus speaks during his confirmation hearing before the Senate Armed Services Committee as his wife Holly Petraeus listens on Capitol Hill, June 29, 2010, in Washington, DC.