PREACHING TO THE CONVERTEDLet’s take stock: Iraq, a mess. Afghanistan, not getting any better. Iran, more influential than ever. Turkey, on the brink of war with Kurdistan. And, now Pakistan . . .http://www.nytimes.com/2007/10/21/world/asia/21musharraf.htmlThe scenes of carnage in Pakistan this week conjured what one senior administration official on Friday called “the nightmare scenario” for