December 30, 2012 - Flashing Red: A Special Report on the Terrorist Attack At Benghazi is released by the U.S. Senate Committee on Homeland Security and Governmental Affairs.
January 23, 2013 - Secretary Clinton testifies for more than five hours before the House Foreign Affairs Committee and the Senate Foreign Relations Committee. Clinton acknowledges a "systemic breakdown" as cited by an Accountability Review Board but says that her department is taking additional steps to increase security at U.S. diplomatic facilities.
April 23, 2013 - House Republican leaders release a 46-page interim progress report about the terror attack in Benghazi, in which they claim former Secretary of State Hillary Clinton personally signed off on cuts in security at the compound, which they say would contradict her congressional testimony.
May 4, 2013 - A senior Republican releases names of witnesses for a May 8, 2013, congressional hearing on the attack, including two characterized by Republicans as whistleblowers. The witnesses include Mark Thompson, the acting deputy assistant secretary for counterterrorism; Gregory Hicks, a foreign service officer and former deputy chief of mission/chargé d'affairs in Libya; and Eric Nordstrom, diplomatic security officer and former regional security officer in Libya.
May 8, 2013 - Testimony is given at a six-hour Republican-led House Oversight Committee hearing from State Department whistleblowers who had not previously testified, including details from Gregory Hicks who was on the ground in Tripoli at the time of the attack.
May 9, 2013 - Committee members request additional hearings and the release of unclassified emails that preceded the initial statements given to the public by U.S. Ambassador to the United Nations Susan Rice.
May 15, 2013 - The White House releases more than 100 pages of e-mails detailing the development of unclassified talking points used to explain the events of last September 11. CNN reports, "The e-mails indicate the CIA was likely the lead organization in developing the talking points, with the State Department recommending significant changes."
August 7, 2013 - Federal authorities file the first criminal charges and several suspects including prominent Libyan militia figure Ahmed Abu Khattala are charged in the Benghazi consulate attack.