Secretary of State Hillary Clinton during her testimony Wednesday before the Senate Foreign Relations Committee. Saul Loeb /AFP/Getty Images hide caption

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Secretary of State Hillary Clinton stands with Libyan fighters who ousted Moammar Gadhafi during an Oct. 18, 2011, visit to Libya. Clinton was a strong supporter of U.S. intervention in Libya. Kevin Lamarque/AFP/Getty Images) hide caption

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A burned vehicle outside the U.S. consulate in Benghazi, Libya, after the Sept. 11, 2012, attack. Esam Omran Al-Fetori /Reuters /Landov hide caption

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Secretary of State Hillary Clinton on Dec. 6 in Dublin. Kevin Lamarque /AFP/Getty Images hide caption

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Libyan President Mohammed el-Megarif speaks during a memorial service in Tripoli for U.S. Ambassador to Libya, Chris Stevens, and three consulate staff killed in Benghazi on Sept. 11. Abdel Magid al-Fergany/AP hide caption

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Sen. Lindsey Graham, R-S.C., and Sen. Kelly Ayotte, R-N.H., speaking to reporters after their meeting with U.N. Ambassador Susan Rice. Win McNamee/Getty Images hide caption

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A Libyan military guard stands in front of one of the U.S. Consulate's burned out buildings on Sept. 14. The U.S. is offering new details of the attack on the consulate that killed four Americans, including Ambassador Chris Stevens. Mohammad Hannon/AP hide caption

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A burned vehicle outside the U.S. consulate in Benghazi, Libya, after the Sept. 11 attack. Esam Omran Al-Fetori /Reuters /Landov hide caption

itoggle caption Esam Omran Al-Fetori /Reuters /Landov