N. Korea threatens S. Korea with nuclear war

From YNetNews: 

North Korea warned Monday that US-South Korean cooperation could bring a nuclear war to the region, as the South began artillery drills amid lingering tension nearly three weeks after the North's deadly shelling of a South Korean island.

 The South's naval live-fire drills are scheduled to run Monday through Friday at 27 sites. The regularly scheduled exercises are getting special attention following a North Korean artillery attack on front-line Yeonpyeong Island that killed two South Korean marines and two civilians. (AP)