It would be hard to think of a bigger mess than Pakistan: nuclear; half the population radically Islamic; vast sanctuaries for the architects of 9/11; a virulent anti-Americanism in which aid and military credits are demanded but never appreciated; dictatorship at odds with America’s professed support for Middle-East constitutional government-all the while doing little to hunt down al Qaeda while assuring us that the possible radical alternative, with some reason, is far worse...