Reuters correspondent Emma Graham-Harrison has written a moving and disturbing story about an 8-year-old girl badly burned by white phosphorous after being caught in the middle of a firefight in Afghanistan.  Like everything else that happens in Afghanistan, the question of who fired the shell that exploded in her house is in dispute. Her family said the shell was fired by western troops; NATO said it was "very unlikely" the weapon was theirs; and a U.S. spokeswoman suggested the Taliban may have been responsible.