Exclusive: The Taliban has issued a chilling warning to Afghans, alleged in secret US military files leaked on the internet to have worked as informers for the Nato-led coalition, telling Channel 4 News "US spies" will be hunted down and punished. Speaking by telephone from an undisclosed location, Zabihullah Mujahid told Channel 4 News that the insurgent group will investigate the named individuals before deciding on their fate. "We are studying the report," he said, confirming that the insurgent group already has access to the 92,000 intelligence documents and field reports. "We knew about the spies and people who collaborate...