"Trilateral Anti-Submarine Drills Aim to Deter North Korean Threats"

The navies of South Korea, the US, and Japan will hold two days of anti-submarine exercises starting Monday to better counter North Korea's evolving nuclear and missile capabilities. The trilateral drills come as North Korea unveiled last week new, smaller nuclear warheads, vowed to produce more weapons-grade nuclear materials to expand its arsenal, and boasted of what it called a nuclear-capable underwater attack drone. The exercises will use a mobile anti-submarine warfare training target to improve the capabilities needed to detect, track and destroy North Korean underwater threats.