Comment on the language used by the speaker and provide an opposing view on the topic.
"A real leader would have this idiot and his capitol city under 30 feet of rubble, but, no, we have to wait for him to kill millions of innocents first."
Gotta love Internet machismo.
So you want Pyongyang under 30 ft of rubble. In other words, you want to kill millions of innocents before Kim does.