North Korea vows to build up nuke arsenal at UN meeting on latest ICBM launch

North Korea vowed to speed up its nuclear arsenal buildup on Monday, in a message delivered at a U.N. Security Council (UNSC) meeting to discuss its recent launch of a new intercontinental ballistic missile (ICBM). DPRK Ambassador Kim Song denounced the UNSC session as unlawful and stressed that its launch of the Hwasong-19 on Oct. []