When you're offered a job to serve your country, you step back and assess. And once I spoke with President Trump and told him what I thought I needed to be successful - which was to be a Cabinet member; to be on the National Security Council, where I could be a part of the policy decisions; and to be able to say what I wanted to say - how do you not do that job? He was incredibly supportive. He's continued to be. I love a good challenge, and this certainly has been that.

What Donald Trump is trying to do is find his own team, figure out how he's going to do it. But we have to remember, he can hire and fire anybody else that he wants to do.

Don't tell me that my parents didn't build their business.

I think you first have to get into Kim Jong-un's head, you know, which is he's in a state of paranoia. He's incredibly concerned about anything and everything around him. I think these nuclear tests were a message to South Korea after the election. So what we're going to do is continue to tighten the screws. He feels it. He absolutely feels it. And we're going to continue, whether it's sanctions, whether it's press statements, anything that we have to do.

I think what we're seeing is that they're testing each other. Russia is testing us, we're testing them, it's part of just, you know, the new president Donald Trump coming in and President Vladimir Putin having to figure out his place.

Russians are concerned by North Korea. I mean there's - this is getting kind of close to home for them. And so they're concerned. And I think certainly what we're going to start doing is rallying the troops again and say, ok, what do we need to do next?

I think what you can see is this is a president of action. I mean Donald Trump is not one that's going to sit there and talk for too long. If he thinks someone is wrong, he's going to deal with it.