At the Benghazi whistleblower hearings yesterday, one of the biggest revelations was that Ambassador Chris Stevens was brought to a hospital that was controlled by Ansar Al-Shariah, the terror group that was later blamed for carrying out the assault on the U.S. Consulate.

Jenna Lee discussed the origins and makeup of this shadowy terror group with J. Peter Pham, director of the Africa Center at the Atlantic Council and an expert on extremist groups in North Africa.

He said the group "kind of went underground" after the attack, but since January has resurfaced and exerts significant control over Benghazi because the "exceptionally weak" central government is afraid to challenge them. He added that the group is linking up with other terror groups, like Al Qaeda in North Africa and other militants in Egypt and Mali.