WATCH: North Korea calls new UN sanctions an ‘act of war’ December 25, 2017North Korea called a new round of United Nations sanctions an “act of war,” adding that the US and other nations that supported the strict measures will pay a heavy price. Dr. Kiron Skinner, a professor of international relations at Carnegie Mellon University and a research fellow at the Hoover Institution discusses why Kim Jong Un does this and whether the world needs to take him seriously. Kim Jong UnKiron SkinnerNorth KoreaUnited Nations