North Korea Tests 'Nuclear Underwater Attack Drone' During Military Drills with US and South Korea.

North Korea claimed it tested a "nuclear underwater attack drone" this week amid joint US and South Korean military drills. The new underwater weapon is designed to “stealthily infiltrate into operational waters” and target naval striker groups and enemy ports, North Korea claimed. The weapons test came as the US and South Korea wrapped up Freedom Shield 23, a series of military drills around the Korean Peninsula that began on March 11. North Korea also fired multiple strategic cruise missiles from the South Hamgyong province on Wednesday.