Chuck Hagel: “People say we’re not fighting for oil. Of course we are.”

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

No one person should ever govern a party. That’s not the point of political parties. Political parties must be diverse, have different opinions.

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.

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