Under Kim Jong Un's supervision, North Korea has conducted live artillery drills near a contested sea border with the South, state news reported. The drills reportedly hit the "biggest hotspots in the southwestern sector of the front." It's not clear exactly when the drills, serving as practice for attacks on South Korean islands, occurred, Reuters notes. According to the state report, "shells intensively hit the imaginary targets of the enemy while the roar of the artillery pieces rocked heaven and earth," AFP reports, via Rappler. (More North Korea stories.)