Presidential candidate Hillary Clinton tells panels she ''has lost more sleep than all of you'' over what happened in Benghazi. Rough Cut (no reporter narration)
ROUGH CUT (NO REPORTER NARRATION) STORY: Former U.S. Secretary of State Hillary Clinton defended her handling of the deadly 2012 attacks in Benghazi, Libya, from Republican criticism during high-stakes testimony on Thursday telling her interrogators in Congress that she has "lost more sleep" than all of them put together over the events in Benghazi. The front-runner in the 2016 Democratic presidential race, Clinton told a congressional committee the attacks by suspected Islamist militants that killed the U.S. ambassador and three other Americans must not discourage U.S. action globally and said the incident already had been thoroughly investigated. Her appearance before the Benghazi panel was another major challenge for Clinton, who has been on a hot streak with a strong performance in last week's first Democratic debate and the news that her strongest potential challenger, Vice President Joe Biden, will not seek the Democratic nomination. Clinton's long-awaited appearance before the panel follows months of controversy about her use of a private home email server for her State Department work, a set-up that surfaced in part because of the Benghazi committee's demand last year to see her official records. It also follows weeks of political brawling over whether the Republican-led House committee's real goal was to puncture her front-running presidential prospects. The committee is made up of seven Republicans and five of Clinton's fellow Democrats.