U.S. Secretary of State John Kerry recently visited Seoul and South Korean President Park Geun-hye will head to Washington later this month. The main agenda item: what to do about North Korea.

As usual, no one knows what is going on in Pyongyang. Its internal politics appears to be bloodier than usual. Ironically, this might provide an opportunity for Washington to initiate talks over a more open bilateral relationship.

The latest rumor is that young dictator Kim Jong Un had his defense minister executed with anti-aircraft fire for disrespectful conduct, including falling asleep in meetings. Hyon Yong Chol probably has been purged, though South Korea's intelligence agency acknowledged that it could not confirm his particularly gruesome form of execution.