Iraqi Prime Minister Nouri al-Maliki has been faulted by some for deepening sectarian divisions now roiling the country. Gwen Ifill talks to Charles Duelfer, former UN and U.S. weapons inspector in Iraq, Abbas Kadhim of Johns Hopkins University and Feisal…

After taking over Iraq’s second largest city Mosul, the Sunni insurgent group known as the Islamic State of Iraq and the Levant set its sights on Baghdad, launching a debate over what the United States should do -- if anything…