People watch a TV news program showing an image published Thursday in North Korea’s Rodong Sinmun newspaper of North Korean leader Kim Jong-un, at the Seoul Railway station in Seoul, South Korea, Thursday, Aug. 25, 2016. North Korean leader Kim said Thursday that his country had achieved the “success of all successes” in launching a missile from a submarine, saying it effectively gave the country a fully equipped nuclear attack capability and put the U.S. mainland within striking distance. (AP Photo/Ahn Young-joon).