The navies of South Korea, the United States, and Japan started two days of anti-submarine exercises on Monday to better counter North Korea’s evolving nuclear and missile capabilities, South Korea’s defense ministry said.
The drills are being staged in international waters off South Korea’s southern island of Jeju, involving a U.S. carrier strike group led by USS Nimitz, which had arrived in the southeastern city of Busan last week.
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….