| The U.S. and South Korean intelligence authorities have obtained information that North Korea has succeeded in miniaturizing nuclear bombs made using plutonium extracted from its Yongbyon nuclear complex, a senior analyst at an international research institute said Tuesday. The intelligence circles have also obtained information that North Korea produced nuclear warheads that could be mounted on medium-range Rodong missiles and they were stored in two underground facilities in the northern part of the country, Daniel Pinkston, a senior analyst at the Seoul-based Northeast Asia office of International Crisis Group, told Kyodo News. |