Frontline: Return of the Taliban

Watch online: Frontline special on Afghanistan

FRONTLINE correspondent Martin Smith ("Hunting bin Laden"; "Truth, War and Consequences") returns to the Afghanistan-Pakistan border and presents a rare look inside this secret sanctuary in "Return of the Taliban." In a region long suspected of harboring Osama bin Laden and strictly off-limits to U.S. troops, Smith explores the complex web of alliances among the Taliban, Al Qaeda fighters and the Pakistani military, and analyzes the consequences for U.S. policy.