Transcript for Melania Trump Opens Up on Husband's Presidential Race
We begin with Donald Trump and his five Melania. In her first sit-down interview with her husband since he decided to run, our cameras going inside their palatial Manhattan home as the two open up about everything from their marriage to the campaign trail and private conversations and Barbara Walters has a preview of her exclusive with the trumps airing on "20/20." Good morning. Good morning. We have not heard from Melania since her husband decided to run for president. You had a chance to speak with him, with her, with the older children. What did you learn about them as a family. Well, when you see him away from the, you know, I'm the greatest and the best, he -- the kids say -- the four older children whom we talked to, as well, he is a very devoted father, that even though he is away a lot he knows everything that's going on with them including the daughter tiffany who we haven't seen that. She is away at university. The daughter by Marla maples. You can't get them to say anything bad about him. I tried but they really are extremely devoted and it's not all campaign talk. Maybe it is, maybe I was just taken in but I was. We heard from Melania. We have not heard from her until now? She says she wants to stay home with their son and that's why she's not on the campaign trail. If a man said this I had a kill him but maybe because she is so beautiful we don't expect her to be as smart as she is. Barbara, you -- I take it all back. Okay, here is some of your exclusive conversation at home with the trumps. Mrs. Trump, it is a pleasure to see you. And we don't see you that often. You're not on the campaign trail. How do you feel about campaigning. Well, it's my choice not to be there. I support my husband 100%. But we have a 9-year-old son together. Baron and I'm raising him and this is the age he needs a parent at home. Were you involved in the decision of your husband to become president? We discuss a lot, yes, and I encouraged him. You did? You encouraged him. I know what he will do and what he can do for America. He loves the American people and he wants to help them. Is yours a marriage of equals? I would say, yes. I would say no, no, I think she's far greater than the 50%. No, we have a very, very pretty much equal relationship, wouldn't you say? Yes. Do you give your husband any advice on the debates? We discuss, I tell him my opinions. Give me an example of a piece of advice that you've given your husband that he has taken? I will keep it private. Well, she's told me -- I can tell you. These told me a couple of types during the debate she was happy with my performance if you want to call it a performance but she said you could tone it down a little bit on occasion. Which I understand. When he's criticized, does it bother you? It's unpleasant but I know I can handle it. Biggest criticism that's untrue that we can clear up is there any? I would say that he's nasty. He's not. And he has a big heart and very warm heart. You see what he is on the campaign trail all the time and on television, and I think, you know, America needs a strong leader and tough leader and know what he's doing. Barbara, including in your conversation global offense such as Isis and Donald Trump talked to you about how he would defeat them. Let's take a look at that now. If you had an opportunity to speak with the leader of Isis, what would you say? These people are insane. These are insane people. So, you would not try -- Normally I'm a big believer in talking. Can you reason with most people. These are -- these are nuts. And it's got to be said and it's got to be stated and Obama, I don't know what's with him. He doesn't talk about -- he doesn't talk about islamic terrorism or radical islamic terrorism. He won't even use the term. It's almost like he's defending them. If you were in the white house right now, what would you be saying? Oh, I would be saying, let's go, folks and I would be getting other countries. I would say we're going to bomb the hell out of them. We are going to get them right now. Which we are bombing them and would love to hear more specifics but you did talk to the older children, as well. What did you learn about them? How devoted they are to him. I tried as I said to get them to say -- first of all, they're a very good-looking family as you can see but I tried to get them to say yeah but on the other hand but they are extremely, even the sons in particular fond of him. Devoted to him so it's interesting to see what they're like when they're not just talking about Isis or when do we get together. They do appear to be a very loving, close family. Yes, they are and to see him in that role, to see him as a grandfather you not only will meet the children but the grandchildren. Grandpa, grandpa. Grandpa Donald. Perhaps we will learn a different side of him. Barbara, always good to see you. Oh, robin, happy to see you. Have a pleasant and enjoyable weekend and you can see much more of barb's exclusive with Donald Trump, his wife Melania and four of his grown children, tonight, where? "20/20." You know that show right here at 10:00, 9 :00 central on ABC.
This transcript has been automatically generated and may not be 100% accurate.