"We're going to bomb them back to the stone age -"

The president said.

"Where they belong."

And there was anger in his voice when he said this, it was not a joke, or hyperbole. Although, no one really believes he will do anything he says, I do think this is what he really *feels* and I don't get it.

Why? Why do the 93 million people who live in Iran 'belong' in the stone age? What did they do to the USA to deserve such contempt and violence?