The North is asking to be obliterated. This would cause another conflict in Korea... in which the North is the enemy. The Pyongyang made a grave error and needs to be delt with. It's time for Kim Jong Ill and his family to be removed and for the North to be put in permenant check.
Should we just ask them nicely? Shake a shame shame finger at them? Stop food shipments so the people starve? Options are a bit lacking.
It's easy to play god on the internet isn't it? But the reality of the situation dictates that we do not go for a full-out war with North Korea over this.
The Chinese have repeatedly told King Jong Jackoff to behave. He has failed to listen and now ... his ass will get handed to him while the Chinese stand by and watch.