David Petraeus

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**FILE** President Obama listens as CIA Director David Petraeus makes a point during a national security meeting in the Situation Room of the White House. (Rex Features via Associated Press)

Vice President Joe Biden (center) talks Sept., 6, 2011, with John Brennan (left), President Obama's chief counterterrorism adviser, and CIA director David Petraeus following a swearing-in ceremony in the Roosevelt Room of the White House in Washington. (Associated Press)

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**FILE** Gen. David Petraeus is seen in Washington on March 18, 2011. (Associated Press)

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FILE - CIA Director nominee Gen. David Petraeus testifies on Capitol Hill in Washington, Thursday,June 23, 2011, before the Senate Intelligence Committee hearing on his nomination. Petraeus is a recipient of the 2012 Jefferson Award. (AP Photo/Cliff Owen)

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Army Lt. Gen. Ronald Burgess (left), Defense Intelligence Agency director; CIA Director David H. Petraeus (center); and James R. Clapper, director of national intelligence, testify on Capitol Hill in Washington on Thursday, Feb. 2, 2012, at a House Intelligence Committee hearing on worldwide threats. (AP Photo/Cliff Owen)

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David Petraeus

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** FILE ** In this Sept. 6, 2011, file photo, new CIA director David Petraeus, right, speaks following his swearing-in ceremony with his wife Holly Knowlton Petraeus, center, and Vice President Joe Biden, left, in the Roosevelt Room of the White House in Washington. (AP Photo/Pablo Martinez Monsivais, File)

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CIA Director David H. Petraeus (right) and James Clapper, director of national intelligence, testify during a joint hearing of the U.S. House and Senate intelligence committees at the U.S. Capitol in Washington on Tuesday, Sept. 13, 2011. The intelligence chiefs briefed lawmakers on the state of intelligence reform 10 years after the Sept. 11 attacks. (T.J. Kirkpatrick/The Washington Times)

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Vice President Joseph R. Biden Jr. (right) administers the oath of office to David H. Petraeus during Mr. Petraeus' swearing-in ceremony as CIA director on Tuesday, Sept., 6, 2011, in the Roosevelt Room of the White House in Washington. Holding the Bible is Mr. Petraeus' wife, Holly Knowlton Petraeus. (AP Photo/Pablo Martinez Monsivais)

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The new director of the CIA, David Petraeus (right), talks with Vice President Joseph R. Biden (back to camera) and John Brennan, President Obama's chief counterterrorism adviser, after Mr. Petraeus was sworn in at the White House on Tuesday. (Associated Press)

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NEW ROLE: David H. Petraeus takes the oath of office Tuesday as director of the CIA with a Bible held by his wife, Holly Knowlton Petraeus. Vice President Joseph R. Biden administered the oath. (Associated Press)

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ASSOCIATED PRESS Former Commander of International Security Assistance Force and U.S. Forces-Afghanistan Gen. David H. Petraeus (second from left) reviews the troops during a farewell tribute and retirement ceremony at Joint Base Myer-Henderson Hall in Arlington.

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Adm. Mike Mullen (left), chairman of the Joint Chiefs of Staff, stands with (from second from left) U.S. Army Gen. David H. Petraeus; Holly Petraeus (partially hidden), the general's wife; and 2nd Lt. Stephen Petraeus, Gen. and Mrs. Petraeus' son, during an armed forces farewell tribute and retirement ceremony for the general on Wednesday, Aug. 31, 2011, at Joint Base Myer-Henderson Hall in Arlington. (AP Photo/Susan Walsh)

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Gen. David H. Petraeus leaves command of U.S. and NATO-led forces in Afghanistan to Gen. John Allen during Monday's change-of-command ceremony in Kabul. Gen. Allen assumes responsibility for drawing up exit plans for U.S. and allied forces from the nearly 10-year war zone. (Associated Press)

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U.S. Army Gen. David H. Petraeus, the outgoing commander of International Security Assistance Force (ISAF) in Afghanistan, salutes during a change-of-command ceremony in Kabul, Afghanistan, on July 18, 2011. (Associated Press)

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** FILE ** Lt. Gen. Curtis Scaparrotti (left) receives a flag from Gen. David H. Petraeus (second from left) as Lt. Gen. David M. Rodriguez (right) looks on during a change of command ceremony in Kabul, Afghanistan, on Monday, July 11, 2011. (AP Photo/Rafiq Maqbool)

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Gen. David H. Petraeus prepares to administer the oath of re-enlistment to 235 U.S. service members during a ceremony in Kandahar, Afghanistan, on Monday. (Associated Press)

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Gen. David H. Petraeus

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U.S. Army Gen. David H. Petraeus, commander of U.S. and NATO forces in Afghanistan, addresses the Royal United Services Institute in London on Wednesday, March 23, 2011. Gen. Petraeus said foreign troops are on course to complete their security role in Afghanistan by the end of 2014, but he has warned that progress easily could be reversed. (AP Photo/Sang Tan)