US Navy sends message to North Korea

The Associated Press is reporting, South Korean and U.S. troops began naval drills Monday in a show of force partly directed at North Korea amid signs that Pyongyang will soon follow through on a threat to conduct its third atomic test. The region has also seen a boost in diplomatic activity since last month, when North Korea announced it would conduct a nuclear test to protest U.N. Security Council sanctions toughened after a satellite launch in December that the U.S. and others say was a disguised test of banned missile technology.