The South Korean military started a five-day naval exercise on Thursday near its disputed maritime border with the communist north, a local report said. The country’s largest-ever anti-submarine drills are to be held near the location of the deadly sinking of a South Korean corvette in March, which Seoul blames on its northern neighbour, South Korean agency Yonhap News reported.

South Korea has developed a long-range cruise missile capable of striking nuclear sites and military targets in North Korea, news reports said on Saturday.

The Hyunmu-3C missile has a range of 930 m