Islamabad, 31 Jan. (AKI) - US secret service agents operating in the remote border area between Pakistan and Afghanistan claim to have found five letters signed by al-Qaeda leader Osama Bin Laden, Saudi daily Al-Watan said on Thursday. Citing unnamed local security sources, the newspaper said that the letters are allegedly handwritten in Arabic and bear Bin Laden's apparent signature and seal. They appear to have been sent last December to some of Bin Laden's followers in the region. One of the letters is addressed to the Taliban leader in Afghanistan's volatile southern province of Helmand, Mansoor Dadallah. In the...