Democratic presidential candidate Hillary Clinton is preparing for high political drama on Thursday when she testifies before the House Select Committee probing the 2012 terrorist attacks that killed four Americans in Benghazi, Libya. Clinton was secretary of state at the time of the attacks and her testimony could have an impact on her White House hopes for 2016.

Republicans on the committee are expected to grill Clinton about the terror attacks that took four American lives, including U.S. Ambassador to Libya Chris Stevens, on September 11, 2012.