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.

I've expressed concern about the assaults on our institutions, both from external sources - meaning the Russians - and internal sources. And I think this will be a real test of the resilience of our system and its pillars.

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?

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.

The FBI is unique in that it straddles both law enforcement and counterintelligence.

If we - particularly, if we peremptorily attack North Korea - that without deliberation, that North Korea will reflexively unleash all the rocketry and artillery - which they're pretty good at, by the way - on Seoul, and do as they vowed many times, to convert Seoul into a sea of fire. So, if we do something like this, this will have cataclysmic results.

First Russians objective was - as I said earlier - to sow discord, discontent, disruption. And their next objective was - because of the very strong personal animus that Putin himself had for both Clintons, both President Clinton and Secretary Clinton - and he particularly held her responsible for what he felt was an attempted color revolution in 2011 to attempt to overturn him. So, he had very strong hatred - personal hatred - towards her, and that kind of led him to - if I'm opposed to her, who am I going to favor?