
White House press secretary Robert Gibbs said the data leak does not raise any doubts about Pakistan's reliability as a key ally in the war against terrorism, adding that the U.S. has "certainly known about safe havens in Pakistan." (Associated Press)

White House press secretary Robert Gibbs answers a question Monday during the daily news briefing at the White House. (Associated Press)

White House Press Secretary Robert Gibbs pauses as he speaks with reporters on Wednesday, July 21, 2010, at the White House in Washington, about the apparently wrongful firing of a black U.S. Agriculture Department official, Shirley Sherrod, after it appeared she had made racist remarks in unfair and heavily edited video posted on a conservative website. Mr. Gibbs says Mrs. Sherrod is owed an apology for the rush to judgement after the full video indicated those remarks were taken out of context. (AP Photo/J. Scott Applewhite)

In this image released by the White House, President Obama receives a briefing in the Situation Room of the White House on the BP oil spill in the Gulf of Mexico, on Wednesday, July 21, 2010. Taking part in the meeting are, clockwise from top; Homeland Security Secretary Janet Napolitano, National Incident Commander Adm. Thad Allen, Environmental Protection Agency Administrator Lisa P. Jackson, U.S. Cost Guard Rear Adm. Peter Neffenger, Press Secretary Robert Gibbs, Interior Secretary Ken Salazar, NOAA Administrator Jane Lubchenco, Energy Secretary Steven Chu and Chief of Staff Rahm Emanuel. (AP Photo/Pete Souza)

In this April 12, 2010, file photo top administration counter-terror deputy John Brennan addresses reporters during a briefing with White House Press Secretary Robert Gibbs, right, in Washington. The Obama administration's recent move to drop references to Islamic radicalism in order to build relations with Muslim nations is drawing fire in a new report warning the decision ignores the role religion can play in motivating terrorists. Explaining the shift, Mr. Brennan said terror leaders "play into the false perception that they are religious leaders defending a holy cause, when in fact they are nothing more than murderers, including the murder of thousands upon thousands of Muslims." (AP Photo/Susan Walsh, File)

** FILE ** Former White House press secretary Robert Gibbs. (Associated Press)

From left, National Security Adviser James Jones, White House Chief of Staff Rahm Emanuel and White House press secretary Robert Gibbs, listen to President Obama speak to members of the media on the South Lawn of the White House in Washington, Friday, June 25, 2010, before traveling to Canada to attend the G-20 summit. (AP Photo/Pablo Martinez Monsivais)

** FILE ** Secretary of State Hillary Rodham Clinton chats with Vice President Joseph R. Biden Jr. in the White House on Aug. 18, 2009. White House spokesman Robert Gibbs on Wednesday, Oct. 6, 2010, denied that President Obama was considering Mrs. Clinton as running mate in 2012 instead of Mr. Biden.

** FILE ** White House press secretary Robert Gibbs (AP photo)