Diplomats and observers in other countries had considered such an explosion likely as Pyongyang appeared to be repeating a pattern of provocative actions seen before the previous explosions.

WSJ: North Korea Tests Nuclear Device

This concern about the Bush Administration's approach to decision-making is heightened by several previous actions -- actions that suggest a pattern of behavior of which the non-summit idea appears to be but the most recent example.

CENTERFORSECURITYPOLICY: Distressing Signals On Summitry