The myth holds that Korea and the Kim dynasty are one and the same. It is built almost entirely on the promise of standing up to a powerful and menacing foreign enemy. The more looming the threat—and Trump excels at looming—the better the narrative works for Kim Jong Un. Nukes are needed to repel this threat. They are the linchpin of North Korea’s defensive strategy, the single weapon standing between barbarian hordes and the glorious destiny of the Korean people—all of them, North and South. Kim is the great leader, heir to divinely inspired ancestors who descended from Mount Paektu with mystical, magical powers of leadership, vision, diplomatic savvy, and military genius. Like his father, Kim Jong Il, and grandfather Kim Il Sung before him, Kim is the anointed defender of all Koreans, who are the purest of all races. Even South Korea, the Republic of Korea, should be thankful for Kim because, if not for him, the United States would have invaded long ago. [...]
And with only a few of its worst weapons, North Korea could, probably within hours, kill millions. This means an American first strike would likely trigger one of the worst mass killings in human history. In 2005, Sam Gardiner, a retired U.S. Air Force colonel who specialized in conducting war games at the National War College, estimated that the use of sarin gas alone would produce 1 million casualties. Gardiner now says, in light of what we have learned from gas attacks on civilians in Syria, that the number would likely be three to five times greater. And today North Korea has an even wider array of chemical and biological weapons than it did 12 years ago—the recent assassination of Kim’s half brother, Kim Jong Nam, demonstrated the potency of at least one compound, the nerve agent VX. The Kim regime is believed to have biological weapons including anthrax, botulism, hemorrhagic fever, plague, smallpox, typhoid, and yellow fever. And it has missiles capable of reaching Tokyo, a metropolitan area of nearly 38 million. In other words, any effort to crush North Korea flirts not just with heavy losses, but with one of the greatest catastrophes in human history. [...]
These aren’t the only problems with a preventive strike. To be effective, it would depend on surprise, on delivering the maximum amount of force as quickly as possible—which would in turn require a significant buildup of U.S. forces in the region. At the start of the Iraq War, American warplanes flew about 800 sorties a day. An all-out attack on North Korea, a far more formidable military power than Saddam Hussein’s Iraq, would almost certainly require more. In order to resist a ground invasion of South Korea, the U.S. would need to bolster the assets currently in place. U.S. Special Forces would need to be positioned to go after crucial nuclear sites and missile platforms; ships would have to be stationed in the Sea of Japan and the Yellow Sea. It’s highly improbable that all of this could happen without attracting Pyongyang’s notice. One of the things North Korea is better at than its southern neighbor is spying; recruiting and running spies is much easier in a free society than in a totalitarian one. [...]
What would be left? North Korea, a country of more than 25 million people, would be adrift. Immediate humanitarian relief would be necessary to prevent starvation and disease. An interim government would have to be put in place. If Iraq was a hard country to occupy and rebuild, imagine a suddenly stateless North Korea, possibly irradiated and toxic, its economy and infrastructure in ruins. There could still be hidden stockpiles of nuclear, biological, and chemical weapons scattered around the country, which would have to be found and secured before terrorists got to them. “Success,” in other words, would create the largest humanitarian crisis of modern times—Syria’s miseries would be a playground scuffle by comparison. Contemplating such a collapse in The Atlantic back in 2006, Robert D. Kaplan wrote that dealing with it “could present the world—meaning, really, the American military—with the greatest stabilization operation since the end of World War II.” [...]
“If I am sitting in Pyongyang, and I think you are coming after me, I’ve got minutes to decide if this is an all-out attack, and if I wait, I lose,” Jim Walsh told me. “So it’s use nuclear weapons or lose them—which makes for an itchy trigger finger. The idea that the U.S. and South Korea are going to have a limited strike that the North Koreans are going to perceive as limited, and that they are willing to stand by and let happen, especially given the rhetorical context in which this has been playing out, complete with repeated, stupid statements about ‘decapitation’—I can’t see it happening.”