Secretary of Defense Leon Panetta comments on Hagel's tough hearing last Thursday before the Senate and brings up some questions that should have been asked.
Chairman of the Joint Chiefs of Staff General Martin Dempsey and Secretary of Defense Leon Panetta discuss the threat of Al Qaeda in North Africa and regional instability associated with recent change.
Secretary of Defense Leon Panetta tells NBC's Chuck Todd if a sequester is allowed to happen it will "badly damage" the readiness of the U.S.
Kevin Lamarque / Reuters
Hillary Clinton's life has taken her from first lady to senator to secretary of state.
In remarks at the diplomatic agency's Foggy Bottom headquarters, Secretary of State Hillary Rodham Clinton formally resigned her post at the State Department. Watch her entire statement.
Alex Brandon / AP
In this file photo, Sen. Scott Brown, R-Mass., speaks during a media availability, on Capitol Hill. Brown, who was defeated in his re-election bid, said Friday, Feb. 1, 2013 that he will not run for the Senate seat vacated by John Kerry, who was named secretary of state.
Chip Somodevilla / Getty Images
Former Senator Chuck Hagel, R-Neb., testifies before the Senate Armed Services Committee during his confirmation hearing to become the next secretary of defense on Capitol Hill, Jan. 31, 2013.