An international human rights group has called on Pakistan to immediately release or charge two American citizens, both brothers, who were allegedly picked up by Pakistani intelligence agents last year in Karachi for links to Islamic militants and have not been heard from since. New York-based Human Rights Watch also demanded that the U.S. government clarify its involvement in the case in a press release Tuesday. It said the men are “being held at its (Washington’s) behest in Pakistan or elsewhere.” Full Story