Chuck Hagel: “It is clear to the leadership in Afghanistan and the people that we are not there to occupy.”

I think that is really the essence of the ultimate objective we'd like to see in Syria.

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 is a measurement. But I don't think it is the measurement. I mean, I was in a war with a lot of body counts every day. We lost everyone.

American military power alone cannot and will not eradicate the threats posed by ISIL to the United States, our allies, and our friends and partners in the region.