Chuck Hagel: “I will work tirelessly to resolve that issue holding all commanders fully accountable.”

The Chinese are watching this as relates to Taiwan, the Iranians, the North Koreans -- all countries are watching this, and watching the U.S. response to it, and the West response to it.

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

When the National Guard opened up on students and killed students, partly because they weren't trained, they panicked.

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.