'That's called genocide': Red flags raised over Trump's 'war criminal' reply to reporter

Donald Trump's answer to a reporter who asked about Iran caused some to panic Saturday.

Trump has previously suggested he will accept nothing less than "unconditional surrender" from Iran, but on Air Force One over the weekend he mused about destroying everyone in Iran so no one was left to surrender.

"They're being decimated," Trump told journalists on the plane. "You know, at some point I don't think there will be anybody left to say, 'We surrender.'"

That off-the-cuff comment didn't sit well with observers online.