** FILE ** This July 23, 2010, file photo shows Gen. Stanley McChrystal reviewing troops for the last time as he is honored at a retirement ceremony at Fort McNair in Washington. Speaking out for the first time since he resigned, McChrystal writes in a new memoir that he takes the blame for the Rolling Stone article that ended his Afghan command and army career, including for the unflattering comments attributed to his staff about the Obama administration. (AP Photo/J. Scott Applewhite, file)
** FILE ** This July 23, 2010, file photo shows Gen. Stanley McChrystal reviewing troops for the last time as he is honored at a retirement ceremony at Fort McNair in Washington. Speaking out for the first time since he resigned, McChrystal writes in a new memoir that he takes the blame for the Rolling Stone article that ended his Afghan command and army career, including for the unflattering comments attributed to his staff about the Obama administration. (AP Photo/J. Scott Applewhite, file)
President Barack Obama, followed by, from second from left, Gen. David Petraeus, Defense Secretary Robert Gates, Vice President Joe Biden, and Joint Chiefs Chairman Adm. Michael Mullen, walks to the Rose Garden of the White House in Washington, Wednesday, June 23, 2010, to announce that Petraeus would replace Gen. Stanley McChrystal. (AP Photo/Charles Dharapak)
Gen. David Petraeus, left, and Defense Secretary Robert Gates look on as President Obama announces that Gen. Petraeus will replace Gen. Stanley McChrystal as the top commander in Afghanistan, Wednesday, June 23, 2010, in the Rose Garden of the White House in Washington. On Thursday, July 8, 2010, Mr. Gates said Marine Corps Gen. James Mattis will replace Gen. Petraeus at the U.S. Central Command. (AP Photo/Evan Vucci)
In this June 15, 2010 file photo, U.S. Central Commander Gen. David Petraeus testifies on Capitol Hill in Washington, before the Senate Armed Services Committee. The Senate unanimously confirmed Gen. Petraeus to succeed Gen. Stanley McChrystal as top war commander in Afghanistan on Wednesday, June 30, 2010. (AP Photo/Evan Vucci, File)
U.S. President Barack Obama makes remarks on the resignation of Army General Stanley McChrystal, the commander of U.S. troops in Afghanistan, while Army General David Petraeus listens at right, in the Rose Garden of the White House in Washington, D.C., U.S., on Wednesday, June 23, 2010. Obama said McChrystal will be replaced by Petraeus, commander of U.S. forces in the Middle East and Central Asia and the architect of the counterinsurgency strategy the U.S. is pursuing in Afghanistan. Photographer: Chris Kleponis/Bloomberg
Gen. Stanley McChrystal arrives at the White House in Washington, Wednesday, June 23, 2010, for a meeting with President Barack Obama. (AP Photo/Evan Vucci)
President Barack Obama, followed by, from second from left, Gen. David Petraeus, Defense Secretary Robert Gates, Vice President Joe Biden, and Joint Chiefs Chairman Adm. Michael Mullen, walks to the Rose Garden of the White House in Washington, Wednesday, June 23, 2010, to announce that Petraeus would replace Gen. Stanley McChrystal. (AP Photo/Charles Dharapak)
President Barack Obama, followed by Gen. David Petraeus, right, and Defense Secretary Robert Gates, left, arrives in the Rose Garden of the White House in Washington, Wednesday, June 23, 2010, to announce that Petraeus would replace Gen. Stanley McChrystal. (AP Photo/J. Scott Applewhite)
