A North Korean submarine fired a torpedo which caused the sinking of a South Korean warship in South Korean waters - with the loss of 42 lives

Excerpt from Channel 4's Snowmail - Thursday, 20 May 2010:

Dramatic tension between the two Koreas, with the official finding that a North Korean submarine fired a torpedo which caused the sinking of a South Korean warship - with the loss of 42 lives. The warship was in South Korean waters. The condemnation is worldwide. The problem for South Korea is that whatever it does in response, North Korea has threatened all out war. It’s an incident which threatens to spread well beyond the region. If there's a will in the international community to ramp up pressure on North Korea, would China scupper it?

North Korea blamed for sinking navy ship: http://bit.ly/9uauHl