Explainer: Why North Korea's satellite launches draw condemnation

North Korea has notified Japan it plans to launch a satellite between Wednesday and December 1, prompting criticism from Japan and South Korea who say it would violate a UN ban on Pyongyang's missile development. The Chollima-1 seems to be a new design and most likely uses the dual-nozzle liquid-fuelled engines developed for Pyongyang’s Hwasong-15 ICBM, analysts said. Since 1998 North Korea has launched six satellites, two of which appeared to have successfully reached orbit, and the last of which was in 2016.