ABOARD THE ROK DOKDO (AP) - South Korean military drills are drawing more threats from North Korea.
South Korean troops fired artillery and dropped sonar buoys into the Yellow Sea today. Military officials say about 4,500 troops aboard more than 20 ships and submarines, as well as about 50 aircraft, are taking part in five days of naval exercises.
The drills are going on near the spot where a warship sank four months ago and near the maritime border of the two Koreas.
North Korea's official news agency says the country will retaliate at "even the slightest sign of attack."
A five-nation team of investigators concluded that a North Korean submarine fired a torpedo at a South Korean warship in March, killing 46 sailors. North Korea denied sinking ship, which was on routine surveillance.