Sub Sank South Korean Warship

"A North Korean torpedo sank a South Korean navy ship in March causing the loss of 46 sailors, an international report has found. Investigators said they had discovered part of the torpedo on the sea floor and it carried lettering that matched a North Korean design. John Sudworth in Seoul, Damian Grammaticas in Beijing, and Adam Brookes in Washington DC report on how the news has been recieved in the South Korea, China and the US. "