Mock South Korean missiles are silhouetted at the War Memorial of Korea museum in Seoul on Sunday, Oct. 7, 2012. South Korea said the United States has agreed to allow it to develop longer-range missiles that could strike all of North Korea. (AP Photo/Lee Jin-man)

Photo by: Lee Jin-man

Mock South Korean missiles are silhouetted at the War Memorial of Korea museum in Seoul on Sunday, Oct. 7, 2012. South Korea said the United States has agreed to allow it to develop longer-range missiles that could strike all of North Korea. (AP Photo/Lee Jin-man)