Chuck Hagel: “Other countries, like Iran, seeking nuclear weapons should take note of North Korea's experience.”

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

They're not trained for law enforcement.

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

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.