
United States Deputy Secretary of State William Burns (left) arrives Jan. 11, 2013, at the European headquarters of the United Nations in Geneva for a meeting with U.N. Joint Special Representative for Syria, Lakhdar Brahimi and Russian Deputy Foreign Minister Mikhail Bogdanov (both unseen) to find a politic solution for the crisis in Syria. (Associated Press)

United States Deputy Secretary of State William Burns (left) arrives Jan. 11, 2013, at the European headquarters of the United Nations in Geneva for a meeting with U.N. Joint Special Representative for Syria, Lakhdar Brahimi and Russian Deputy Foreign Minister Mikhail Bogdanov (both unseen) to find a politic solution for the crisis in Syria. (Associated Press)

Sen. Bob Corker, R-Tenn., right, and Sen. James Risch, R-Idaho, left, listen to testimony from State Department officials after an independent review panel said this week that serious bureaucratic mismanagement was responsible for inadequate security at the mission in Benghazi, Libya, where the U.S. ambassador and three other Americans were killed on Sept. 11, on Capitol Hill in Washington, Thursday, Dec. 20, 2012. Deputy Secretary of State Thomas Nides, who is in charge of management, and State Department Deputy Secretary of State William Burns, who is in charge of policy, appeared in place of Secretary of State Hillary Rodham Clinton who had been scheduled to testify but canceled after fainting and sustaining a concussion last week. (AP Photo/J. Scott Applewhite)

Sen. Bob Corker, R-Tenn., right, confers with Sen. Johnny Isakson, R-Ga., left, as they listen to testimony from State Department officials after an independent review panel said this week that serious bureaucratic mismanagement was responsible for inadequate security at the mission in Benghazi, Libya, where the U.S. ambassador and three other Americans were killed on Sept. 11, on Capitol Hill in Washington, Thursday, Dec. 20, 2012. Deputy Secretary of State Thomas Nides, who is in charge of management, and State Department Deputy Secretary of State William Burns, who is in charge of policy, appeared in place of Secretary of State Hillary Rodham Clinton who had been scheduled to testify but canceled after fainting and sustaining a concussion last week. (AP Photo/J. Scott Applewhite)

The Senate Foreign Relations Committee holds a hearing with Deputy Secretary of State Thomas Nides, right, who is in charge of management, and State Department Deputy Secretary of State William Burns,left, who is in charge of policy, after an independent review panel said this week that serious bureaucratic mismanagement was responsible for inadequate security at the mission in Benghazi, Libya, where the U.S. ambassador and three other Americans were killed on Sept. 11, on Capitol Hill in Washington, Thursday, Dec. 20, 2012. Secretary of State Hillary Rodham Clinton had been scheduled to testify but canceled after fainting and sustaining a concussion last week. (AP Photo/J. Scott Applewhite)

Libyan President Mohammed el-Megarif speaks during a memorial service in Tripoli, Libya, on Thursday, Sept. 20, 2012, for J. Christopher Stevens, the U.S. ambassador to Libya, and three consulate staff members killed in Benghazi on Sept. 11. (AP Photo/Abdel Magid al-Fergany)

Egyptian President Mohammed Morsi (right) meets July 8, 2012, with Foreign Minister Mohammed Kamel Amr (left) and U.S. Undersecretary of State William Burns at the Presidential palace in Cairo. Morsi is the country's first democratically-elected president, first Islamist, and civilian to take office in Egypt. (Associated Press/Maya Alleruzzo)

Egyptian President Mohammed Morsi (right) meets July 8, 2012, with Foreign Minister Mohammed Kamel Amr (left) and U.S. Undersecretary of State William Burns at the Presidential palace in Cairo. Morsi is the country's first democratically-elected president, first Islamist, and civilian to take office in Egypt. (Associated Press/Maya Alleruzzo)