Trump's UN ambassador threatens Iranian counterpart: 'He should be careful with his words'

President Donald Trump's ambassador to the United Nations threatened his Iranian counterpart in an appearance on Fox Business.

U.S. envoy Mike Waltz clashed with Iran's UN ambassador Saeid Iravani at an emergency meeting Sunday of the UN Security Council after the president ordered joint airstrikes with Israel that killed Ayatollah Ali Khamenei and other top leaders, after the Iranian envoy urged American representatives to "be polite."

"Frankly, I’m not going to dignify this with another response, especially as this representative sits here in this body representing a regime that has killed tens of thousands of its own people and imprisoned many more simply for wanting freedom from your tyranny," Waltz said at the meeting.

Waltz appeared Wednesday morning on Maria Bartiromo's program, where he apparently threatened Iravani on air.

"You know, I'm going to be kind here," Waltz said, "but it wouldn't surprise me if this guy ends up knocking on our door for asylum. This regime is falling apart, and they have abused, imprisoned, tortured their own people for far too long. They've threatened the world for far too long."

Bartiromo asked if Iravani's comments were threatening, and Waltz said the Iranian envoy had better watch himself while he's in New York City – although the United Nation is considered to be international land.

"I can't say how many American soldiers the Iranians have killed either at their hands or their proxies," Waltz said. "I'm a Green Beret, not my first firefight, and he should be careful with his words sitting on American soil, and I'll just leave it at that."