What if we had just called the North Koreans bluff and bombed their nuke facilities when they did their little "test" in July. We were lucky enough they didn't "test" it in the US or South Korea, so actions have consequences. We should have just blasted it to hell. If they didn't like that, then blast everything else. They knew we wouldn't do anything but hand wring for weeks afterward. They should have been shown that they "miscalculated".
Conservative estimates of KIAs in Seoul are 1M before the NK's underground artillery tubes can be silenced.
Mark