Obviously, what's happening in China right now is crucial, in the party congress, which as someone said has anointed a new emperor of China in President Xi. So there's the rise of China, and their active involvement in the United States internally in our business and financial realms. That certainly bears watching.

We're talking about nuclear war with North Korea. We're talking about Russia. Does it feel like the world has shifted? Are we all just in Donald Trump's reality show now?

I think, as a professional courtesy, when the president asks you to dinner, you go.

Impeachment is our system's last resort for someone who treats himself or herself as above the law, the most relevant thing is whether this president, by his recent course of action, on top of his violations of the foreign corruption or emoluments clause, this president has shone that he cannot be trusted to remain within the law and our constitution's last resort for situations of that kind is to get the person out of office.

The two most capable nation state adversaries in the cyber domain are clearly Russia and, of course, China. And I do think Russia poses a huge threat in the way they have used the cyber domain. That, to me, by the way, is the big issue here, is Russian interference in our political process, in our election process. And that is an egregious act by them. And they will continue to do that and I think more aggressively than they have in the past. And I think it's something Americans, all American citizens need to be aware of.

We had a general awareness, for example, of Russian use of social media - Facebook ads, use of Twitter, fake news implants - we had a general understanding of that. But now, as time has elapsed and time has gone on, I've certainly learned a lot more about the depth and breadth of what the Russians were about.

We have lots of challenges around the world, and I have no doubt the intelligence community will continue to watch them, monitor them, and report on them. The issue is, with all of our other distractions here in Washington, particularly, will the appropriate attention be paid to each one of these issues?