The Cold War has ended. It's very simple. We are no longer living in a bipolar world. The chances that we will go to war with Russia are pretty much ended. Mutually Assured Destruction was a doctrine that worked very well for decades as a deterrent, but the world has fundamentally changed.

No matter what age people are, I hope the lesson is to be engaged. Understand what your government is doing. Follow them. Ask questions. There is a price to be paid for speaking truth to power, but you can live through it.

The Cold War has ended. It's very simple. We are no longer living in a bipolar world. The chances that we will go to war with Russia are pretty much ended. Mutually Assured Destruction was a doctrine that worked very well for decades as a deterrent, but the world has fundamentally changed.

The emergent terrorist threats and the spread of nuclear technology and materials have made it much more likely that terrorists will get their hands on a nuclear weapon and that just changes the whole calculus. I love the quote by Rev. Richard Cizik: "If you've never changed your mind about anything, then pinch yourself, you might be dead." The world has changed and we need to start talking about this.

I think human intelligence is the only one that will actually tell you intent.

I would much prefer to be overseas in a covert capacity working on issues, but that is hypothetical. That is no longer open to me. So if I can use my voice in this manner, and talk about something that I care about, then I feel fortunate.

I really believe that even with all of our problems, we're still the best nation in the world. The idea of the United States is why millions of people want to come here every year. The reality is sometimes different, and we certainly have many things to fix, but I really believe that we have in our national DNA the ability to be a great nation that leads the way to progress.