Al Qaeda leader Osama bin Laden might be preparing to move from Pakistan to Afghanistan, according to sources with access to the latest U.S. intelligence. U.S. intelligence found signs of a network of al Qaeda couriers and safe houses on the Afghan side of the border, sources said. Such a network could be a sign bin Laden might be planning to flee Pakistan. Pentagon officials said they think bin Laden is hiding along the mountainous Pakistan-Afghan border, but they said they do not know bin Laden’s exact location. Full Story