What is U.S.'s role in driving out al-Qaida in Iraq?

While Iraqi government tanks lined the outskirts of Fallujah, Prime Minister Nouri al-Maliki urged Sunni tribal leaders to help drive out al-Qaida militants. Judy Woodruff talks to journalist Jane Arraf and former U.S. ambassador to Iraq James F. Jeffrey about the sectarian grievances at play and the U.S.’s role.