US-S. Korea-Japan hold drills due to North Korea submarine threats

SEOUL, South Korea: The defense ministry in Seoul said this week that the naval forces of South Korea, the U.S. and Japan have begun a two-day anti-submarine exercise aimed at countering North Korea's nuclear and missile threats.

The drills will take place off Jeju island on South Korea's southeast coast, and will involve a US carrier strike group led by the USS Nimitz.

The ministry said that a mobile ant