Petraeus testifies on Benghazi attack

CIA Director David Petraeus, testifies b
CIA Director David Petraeus testifies in January before the US Senate Intelligence Committee about "World Wide Threats." Petraeus resigned from his CIA position last week after it was revealed that he and his biographer, Paula Broadwell, had an extra-marital affair.
KAREN BLEIER/AFP/Getty Images

Former CIA Director David Petraeus testifies before the House and Senate Intelligence Committees today on the Benghazi, Libya, terrorist attack against the U.S. consulate. What will the committee want to know?