There's a fine line between stubbornness and the positive side of that, which is dogged determination.

That, by the way, is perhaps the most ludicrous comment I've ever heard, that climate change is a bigger threat to our country than radical Islamic terrorism.

I agree with Marco [Rubio] that we can't afford another four years like the last eight years that we've had under [Barack] Obama, for sure. That we concur on. I think we need someone with proven executive leadership to be able to make that case to the American people.

This is something - we have to have the best defensive capabilities. We need to coordinate all of our efforts with the private sector. We need to give them liability relief so that we can do that.

We now have a lack of readiness that is quite scary. We have planes that were - that Harry Truman inaugurated, the B-52. We have - the Navy has been gutted and decimated. The readiness of the Marines is way down.

Donald Trump is not qualified to be president because he's not qualified to deal with Vladimir Putin.

Half of the interview is substantive and half of it I think is sizing the person up.