A mock Scud-B missile of North Korea, right, and other South Korean missiles are displayed at Korea War Memorial Museum in Seoul, South Korea, Sunday, May 19, 2013. (AP Photo/Ahn Young-joon)

Photo by: Ahn Young-joon

A mock Scud-B missile of North Korea, right, and other South Korean missiles are displayed at Korea War Memorial Museum in Seoul, South Korea, Sunday, May 19, 2013. (AP Photo/Ahn Young-joon)