Kim Jong-un, the authoritarian leader of North Korea, has held power since 2011 following the death of his father, Kim Jong-il. Much about him remains shrouded in mystery—including basic details like his exact age.

Kim observed the tests from Nampho Shipyard, where the 5,000-ton destroyer Choe Hyon — launched on Friday — began live-fire drills on Monday, according to the Korean Central News Agency.

If confirmed, Russian assistance in developing such a vessel would mark a major new phase in military cooperation between the two nations. It would also represent a potential breach of UN sanctions, w