James Clapper: “Bob Mueller and his team know a lot more about all this than is out there than we know and I think there's much more to…”

Well, no, it doesn't. And the fact that none of this makes sense, but most acutely, I think, nuclear-related information.

I think this reflects Russian insecurity. And it's almost like, Putin needs a rhetorical security blanket, of making threats, like this.

Given the broad distribution, low cost, and accelerated pace of development of this dual-use technology, its deliberate or unintentional misuse might lead to far-reaching economic and national security implications.

A stark reminder that the terrorist threat to this country hasn't gone away. We cannot take our eyes off this ball.