We believe that the United States has a powerful national interest in Afghanistan, in depriving Al Qaeda of a safe haven on either side of the Afghanistan-Pakistan border. This country would also do enormous damage to its moral and strategic standing if it now simply abandoned the Afghan people to the Taliban’s brutalities. But like many Americans, we are increasingly confused and anxious about the strategy in Afghanistan and wonder whether, at this late date, there is a chance of even minimal success. ... But reports from the ground have been so relentlessly grim — July’s death toll of 66...