Federal prosecutors have filed additional charges against Adnan Mirza, one of the four Muslim students accused of preparing to join the Taliban to fight U.S.-led forces overseas. Mirza, 30, was accused of planning to engage in "battlefield jihad" in the Middle East and financially supporting the terrorism group. Here on a student visa, the Pakistani originally was charged in a four-count indictment with Kobie Williams, a U.S. citizen attending the University of Houston-Downtown. Williams, 34, pleaded guilty to a conspiracy charge and awaits sentencing. The new 13-count indictment names Mirza alone and more completely outlines the allegations against him. The...