WASHINGTON, DC - JANUARY 23:  U.S. Secretary of State Hillary Clinton testifies before the Senate Foreign Relations Committee on Capitol Hill January 23, 2013 in Washington, DC. Lawmakers questioned Clinton about the security failures during the September 11 attacks against the U.S. mission in Benghazi, Libya, that led to the death of four Americans, including U.S. Ambassador Christopher Stevens. (Photo by Alex Wong/Getty Images)