Chuck Hagel: “I think it is pretty clear, as we are consolidating our bases and handing over responsibilities.”

This is so unpredictable. And we've never seen anything quite like this in our lifetime, so there is no playbook here.

It just feeds into all that instability, and unrest, and unpredictability, which makes a damn dangerous world.

They're not trained for law enforcement.

Iraq's continued political progress toward a more inclusive and representative government and its programs of reform and reconciliation will be critical to achieve the progress required.