Trump says Iranian Supreme Leader Khamenei should be 'very worried' amid tensions

"I would say he should be very worried, yeah. He should be. As you know, they're negotiating with us," Trump said, when asked if Iran's leader should be concerned.

"I know they are, but the protesters have said, where are the Americans? We promised them we would have their back. Do we still have their back?" Llamas asked.

"We've had their back. Look, that country's a mess right now because of us. We went in, we wiped out their nuclear," Trump responded.

He added, "If we didn't take out that nuclear, we wouldn't have peace in the Middle East, because the Arab countries could have never done that. They were very, very afraid of Iran. They're not afraid of Iran anymore." 

"They tried to go back to the site. They weren't even able to get near it. It was total obliteration, but they were thinking about starting a new site in a different part of the country. We found out about it. You do that, we're going to do things to you," Trump said.