The biggest thing I worry about is the unsubstantiated story. You have to tell the people what you know -- and acknowledge what you don't know.

I don't expect us to cover all the issues of this campaign [2016] tonight, but I remind everyone, there are two more presidential debates scheduled. We are going to focus on many of the issues that voters tell us are most important, and we're going to press for specifics.

You have to go where the story is to report on it. As a journalist, you're essentially running to things that other people are running away from.

You look at the Middle East, you started the Iran deal, that's another beauty where you have a country that was ready to fall, I mean, they were doing so badly. They were choking on the sanctions. And now they're going to be actually probably a major power at some point pretty soon, the way they're going.

I remember when I interviewed at MSNBC, one of the first things they said to me was, 'In your tapes, you had a mustache, right?' I said, 'Yeah, I recently took it off.' I said, 'If you hire me, you get to decide if you want it or not.' They said, 'No, no, we're fine with it now.'

You never know what doors are going to open up and why they are going to open up. You've got to be ready to walk through them.

There are American citizens who have been inspired to commit acts of terror on American soil, the latest incident, of course, the bombings we just saw in New York and New Jersey, the knife attack at a mall in Minnesota, in the last year, deadly attacks in San Bernardino and Orlando.