S.Korea shelled by N. When do you think matters will escalate if not tomorrow?

It has been said that the last time the DPRK attacked civilians was in 1987 (http://en.wikipedia.org/wiki/Korean_Air_Flight_858), which was during the transition between the Great Leader and Dear Leader. This time, the transition is messy, Dear Leader appears to have suffered a stroke before anyone anticipated, the transition has been foreshortened and his anointed son newly introduced (I've read that a "Gang of Four" including an uncle are positioned to be the new leadership), etc. etc.

Basically just about anything could happen for opaque internal factional reasons. When the military and secret police aren't getting enough food to eat....

This link has a video