WATCH: Trump SLAMS Biden’s foreign policy, saying he may be ‘destroying the world’

Trump also flatly called the current administration "stupid" and opined that they are "destroying the country."

"How about Iran?" Varney initially asked Trump. "We are told that we're gonna be signing an Iranian nuke deal any day now."

"I'm sure you oppose it. You took us out of a nuke deal," Varney went on. "What do you think happens just a few months or a year down the road if we go back into that Iran nuke deal and they get a chance of a bomb?"

Trump replied forcefully, "Well, it's the end of Israel if that happens. Israel is – I don't think Israel could actually let it happen," he elaborated.

"It is the worst deal, and also, you're gonna see nukes all over the Middle East; everyone else is gonna get them too," Trump continued, describing the nightmare scenario in the worst possible terms:

"It will be the end, because if they have 'em, Saudi Arabia's gonna get 'em, and everyone else is gonna get 'em, and how can you tell 'em not to do it?"

"So, why is Biden doing it?" Varney asked incredulously.

"Because he's stupid, OK," said Trump point-blank. "'Cause he's stupid. And because they're stupid. And they shouldn't be in power anyway."

"But they're destroying our country," Trump said, "and they may be ultimately responsible for destroying the world."