Chuck Hagel: “American policies in the war on terrorism must address the political and economic conditions that breed radicalism and…”

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

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.

I think the GOP is in a lot of trouble. And I do think an encouraging sign, I think the strong control that Mr. Trump has exercised over the Republican Party is dwindling.