Our Third Nuclear test at an underground experiment site. Seismologists in several countries defected a tremor emanating from north korea. Experts from Japans Meteorological Agency say the tremor measured 5. 2 in magnitude and was not natural. It happened just before noon local time close to poongkyeri. Military leaders issued a Statement Last month, threatening to target what they called a sworn enemy of the korean people, the united states. U. S. Representatives led the drive at the u. N. To expand sanctions. Security Council Passed a resolution last month condemning the North Koreans for launching a rocket in december. Translator the nuclear test was carried out as part of our efforts to protect our security and independence. It is aimed at responding to the ferocious and hostile act of the u. S. To block our right to legitimately and peacefully launch satellites. South Korean Defense officials estimate the explosion measured 6 to 7 kilotons, but they note it was below 10 kilotons w