North Korea: Front-line units could strike South Korea if more drones appear

Seoul, South Korea — North Korea said Sunday its front-line army units are ready to launch strikes on South Korea, ramping up pressure on its rival that it said flew drones and dropped leaflets over its capital Pyongyang.  South Korea has refused to confirm whether it sent drones but warned it would sternly punish North Korea if the safety of its citizens is threatened.  North Korea on Friday accused South Korea of launching drones to drop propaganda leaflets over Pyongyang three times this month...