In Iraq, Sunnis, Shi'ites and Kurds Wonder: Is This the Beginning of the End?

Amid the onslaught of Sunni extremists in ISIS, Shi'ite and Kurds are watching with fear and wondering how Iraq can hold it together, or whether it's time to go their separate ways.

On a Friday in June 2003, Amina dressed me in black and took me to prayers at the shrine of Imam Khadim in northern Baghdad. She felt that as an American...