Chuck Hagel: “Iraq is better off today because of it.”

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.

Climate change is a national security threat.

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

Our nuclear deterrent plays a critical role in assuring U.S. national security.