That's two high-ranking officials in one week.The idea that the Taliban would have been able to get to anyone this high within a week of the president's brother being murdered is beyond absurd. This is part of a series of assassinations organized by the international faction that put Karzai in power. There's no way the Taliban could pull this off twice in one week.
http://english.aljazeera.net/news/asia/2011/07/2011717171459321200.html