How North Korea's New Warship Exposes Fast Shipbuilding Tricks | WSJ

Kim Jong Un's new 5,000-ton destroyer capsized after North Korea tried a side launch of a military ship. But what seems like a major setback for Pyongyang's Soviet-era navy reveals the close military ties North Korea has with Russia. Certain elements in the design of North Korea's new Chlo Hon-class warship resemble Russia's own Grigorovich-class frigates.

WSJ explores how Moscow appears to be helping Pyongyang build warships, claimed to be nuclear-capable, faster than China.