Officials: al Qaeda to blame for Benghazi attack

According to a senior U.S. law enforcement official, three or four Yemeni men from al-Qaeda took part in the terrorist attack on the U.S. consulate in Benghazi that killed ambassador Christopher Stevens.

Sources: 3 al Qaeda operatives took part in Benghazi attack

U.S. officials knew it was a terrorist attack within 24 hours, and that the terrorists were linked to al-Qaeda. But only now, nearly eight months after the deadly assault, are we finally learning details.

CNN's Pentagon correspondent, Barbara Starr is Outfront with the latest.