Breaking news from this morning: http://news.yahoo.com/s/ap/20071227/ap_on_re_as/pakistan. At this point, we don't know much about the attack, other than the fact that approximately 20 others were killed. We don't know who did this at this point, but suspicion is rightfully centering around either current Pakistani President Pervez Musharraf or al Qaeda-aligned terrorists.
Either way, the law of unintended consequences may apply here. When Archduke Franz Ferdinand was assassinated by Gavrilo Princip in 1914, no one expected that it would trigger WWI and lead to a redrawing of the world map. We had best watch with great concern what goes on in Pakistan now, a country with nuclear weapons. If Pakistan falls the wrong way, the world will be come a much more dangerous place than it already is.