they pledged to defend kim jong- un to the death, and the marshall rehtorihetoric escalatd by the day. state tv announced that pyongyang said they will treat all matters with wartime protocol. panic at the latest threats. >> the south koreans are not that nervous. many times. this breakt think worarwar will out. north korea would collapse and i don't think they will commit suicide. >> they could hit targets as far as alaska but it is likely pyongyang is working to build support for the young leader. they will shut down a shared industrial zone if the "insulting rhetoric" continues, but south koreans doubt this as it would cut off finances for the impoverished state. >> we spoke to justin strother in seoul and asked him how seriously we should take this. >> north korea's threats can't be completely ignored -- and south korea is on alert as they have joint military drills. north korea's threats are harsher but what thye'rey're hoping is there is a provocative action where pyongyang could justify force. but seoul is not blinking so far. >> italy's president giorgio napolitano has two wor