After North Korea successfully launches an intermediate-range missile, a South Korean ballistic missile malfunctions and explodes in a live-fire rehearsal with the US

On Wednesday, during a live-fire rehearsal with the US in response to North Korea's launch of a weapon that soared over Japan and had the range to reach the US territory of Guam the day before, a South Korean ballistic missile malfunctioned and detonated in midair.

Residents of Gangneung, a coastal community already on edge due to North Korea's increasingly aggressive missile launches, were astonished and confused by the expl....