Galloping through forest atop a white horse, Kim Jong Un stars in a new North Korean propaganda video that touts his economic leadership but ignores a recent spate of sanctions-busting missile launches. Pyongyang started the year by conducting a record seven weapons tests, including firing its most powerful missile since 2017, raising fears Kim could restart long-range or nuclear testing. But the government-produced documentary released this week highlights Kim's struggle to right the country's battered economy, which is reeling from a years-long blockade due to the coronavirus and international sanctions. "The overriding theme of the documentary is Kim's devotion to...