President Donald Trump delivered a bizarre answer after Fox Business anchor Maria Bartiromo asked him about his “hoarse” voice during an interview on Wednesday.

“I’ve been screaming at Iranians all day, yes. A little bit of laryngitis because of my scream. I’ve been screaming at the Iranians...” the president responded after Bartiromo questioned if “all day” negotiations with China were the reason for his change in voice.

Bartiromo then pressed the president, asking if it was “the Iran leadership” that he had been yelling at, but Trump kept rolling.

“You know why?” he continued. “Because that’s the only thing they understand. They don’t understand being nice. They understand the way I have to do business.”

“I treat all people differently,” Trump added, in the clip that was captured by Mediaite.

Trump has been asked about his voice before, in November of last year. He attributed it to shouting during trade talks.

“I feel great. I was shouting at people because they were stupid about something having to do with trade and a country, and I straightened it out,” a raspy-sounding Trump told reporters in the Oval Office. He didn’t specify the country. “But I blew my stack at these people.”