North Korean leader Kim Jong Un has ordered his country to quickly start mass producing self-detonating explosive drones, calling their development an “essential requirement,” after overseeing a test of the deadly aerial weapon,

Analysts say the low-cost weapons are attractive to Mr. Kim, who is intent on modernizing North Korea’s military.

North Korean leader Kim Jong Un called for the mass production of attack drones after Pyongyang accused Seoul of flying unmanned aerial vehicles in the airspace over its capital in what it called a “war provocation.