S. Korea, US begin drills amid N. Korea nuclear threat

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 carry out a threat to conduct its third atomic test.


The region is also seeing a boost in diplomatic activity focused on North Korea's announcement last month that it will conduct a nuclear test to protest international sanctions toughened over Pyongyang's long-range rocket launch in December. (AP)