As a nervous world watches a new branch of the Taliban gain ground in Pakistan, FRONTLINE/WORLD reports from the front lines of, perhaps, the most volatile conflict in the world.

As a nervous world watches a new branch of the Taliban gain ground - and the United States steps up its pressure on the Pakistani government to confront the militants' mounting threat - PBS' premier international newsmagazine responds with this special edition of reports from the front lines of what has become, perhaps, the most volatile conflict in the world. First, a timely rebroadcast of Sharmeen Obaid-Chinoy's dangerous journey through a country under siege - from Pakistan's lawless tribal areas, where the army is battling the Taliban; to the Swat Valley, where the Taliban are fighting to keep control; to the major cities, which the Taliban now have in their sights. Also in this hour, correspondent David Montero investigates the mysterious death of a journalist - and a personal friend - killed while reporting from ground zero of the army's campaign against the Taliban in the Swat Valley. And, finally, a new dispatch from Sharmeen Obaid-Chinoy on the coming battle for hearts and minds in Pakistan's largest city.