North Korean leader Kim Jong Un provides guidance on a nuclear weapons program in this undated photo released by North Korea's Korean Central News Agency

North Korean leader Kim Jong Un provides guidance on a nuclear weapons program in this undated photo released by North Korea’s Korean Central News Agency

North Korean leader Kim Jong-un monitors a nuclear weapons program in this undated photo released by the Korean Central News Agency in Pyongyang on September 3, 2017. Photo: KCNA via Reuters

September 19, 2017 8:01 PM (UTC+8)