It dawned on me that Kim Jong-nam, Kim Jong-il's eldest son, could be behind Kim Jong-il's assassination attempt. Jong-nam is being pushed aside and steps are taken by N. Korean regime to install his younger brother, Jong-chol, as the successor to Kim Jong-il. With the help of Chinese and Americans, Jong-nam might have used China as his base to launch this operation.
Jong-nam has enough connections inside N. Korean regime to pull something like this. Some reports even claim that the death of party secretary Kim Yong-soon and the hospitalization of Ko Yong-hee were also the work of pro-Kim Jong-nam faction.
Yes, I caught all of that from Japanese sources, too.
A son killing a father? Impossible, why that would violate the Biblical injunction to "honor thy father and mother"! J
(If I were Kim Jong-nam, I'd make darn sure not to miss Fathers Day this year!)
--Boot Hill