David Petraeus

This undated photograph obtained by The Seattle Times shows FBI Special Agent Frederick W. Humphries posing with target dummies following a SWAT practice in an unknown location. The Times says Humphries sent the photograph to friend and Florida socialite Jill Kelley and others, including one of the paper's own reporters, in an email Sept. 9, 2010. (AP Photo/Special to The Seattle Times)

(L to R) Natalie Khawam, Gen. David Petraeus, Dr. Scott Kelley, Jill Kelley and Holly Petraeus, attend the Gasparilla parade on Jan. 30. 2010, in Tampa, Fla. Jill Kelley was identified as the woman who received threatening emails from the biographer of Gen. David Petraeus, Paula Broadwell, with whom he allegedly had an affair. (AP Photo/The Tampa Bay Times, Amu Scherzer)

CIA Director David Petraeus (L) speaks to members of a Senate (Select) Intelligence hearing on "World Wide Threats" on Capitol Hill in Washington January 31, 2012. At right is Lt. Gen. Ronald Burgess. REUTERS/Kevin Lamarque

CIA Director David Petraeus, second from left, stands with Admiral James A. ìSandyî Winnefeld, Vice Chairman of the Joint Chiefs of Staff, second from right, before a baseball game between the Washington Nationals and the Miami Marlins at Nationals Park Sunday, Sept. 9, 2012, in Washington. (AP Photo/Alex Brandon)

Then U.S. Senator Barack Obama listens (L) as Gen. David Petraeus (R) discusses security improvements in Baghdad while giving him an aerial tour of the city, in this July 21, 2008 file photo. U.S. President Obama has chosen Petraeus to replace Gen. Stanley McChrystal as the top U.S. general in Afghanistan, the president announced on June 23, 2010. Picture taken July 21, 2008. REUTERS/Lorie Jewell/Multi-National Forces Iraq Public Affairs/Handout

Britain's Queen Elizabeth greets U.S. General David Petraeus, Commander of the NATO International Security Assistance Force and U.S. Forces Afghanistan, at Buckingham Palace, in central London March 22, 2011. REUTERS/Stefan Rousseau/Pool

German Defence Minister Thomas de Maiziere (L) and General David Petraeus, Commander of the NATO International Security Assistance Force (ISAF) and US Forces in Afghanistan meet at the ISAF headquarters in Kabul, March 26, 2011. This is de Maiziere's first trip to Afghanistan since becomming defence minister. REUTERS/Michael Kappeler/Pool

General David Petraeus, the three-star U.S. General charged with overseeing the transition of power from the Coalition military authorities to the Iraqis poses June 21, 2004 in Najaf, Iraq. (Photo by Brent Stirton/Getty Images)