Middle- and upper-middle-level U.S. officers based in South Korea and Japan are planning for a meltdown of North Korea that, within days or even hours of its occurrence, could present the world—meaning, really, the American military—with the greatest stabilization operation since the end of World War II. “It could be the mother of all humanitarian relief operations,” Army Special Forces Colonel David Maxwell told me. On one day, a semi-starving population of 23 million people would be Kim Jong Il’s responsibility; on the next, it would be the U.S. military’s, which would have to work out an arrangement with the Chinese People’s Liberation Army (among others) about how to manage the crisis.

There have been only individual defections of North Korean soldiers to the South. Even small, unit-level defections—which would indicate that soldiers are talking to one another and are no longer afraid of exposure by comrades—have not yet occurred.