Originally Posted by Steve Rupe

He has put a halt to the exercises temporarily to see what actions NK takes over the next few months. He has not handed NK anything of substance. If NK does not begin to denuke, the war games will be back in play but even worse come next spring there will be an attack on NK. There was going to be an attack this early spring but the delay has removed the training edge that had taken place over the previous year, especially the edge on the special ops and black ops. Even a week of missed training can and has cost lives.

Both NK and SK became aware of the imminent attack thus the current events. It is my best educated guess that SK became aware of the attack and alarmed the North.