Watch Hillary Clinton lose her cool during Benghazi testimony

Secretary of State Hillary Clinton testified Wednesday before a Senate foreign policy panel about the events surrounding the Sept. 11, 2012, attack on the U.S. consulate in Benghazi, Libya. Clinton got into a heated exchange with Sen. Ron Johnson over the information released about the attack. When the Wisconsin Republican asked why the Obama administration first said the attack was spurred by protests over an anti-Islamic video, a frustrated Clinton shot back, "What difference, at this point, does it make?" She asserted that information at the time wasn't clear and that now the focus should be on figuring out what happened and doing everything possible to prevent future attacks.

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