HAMBURG, Germany - A Moroccan on trial for allegedly supporting a cell of the Sept. 11 suicide hijackers was easy to get along with until he fell under the influence of a fellow countryman, who later was convicted on terrorism charges, their former landlord testified Thursday. Reinhard Martens, who rented defendant Abdelghani Mzoudi a room in his house in late 1996, remembered him as a "very good" tenant until another Moroccan, Mounir el Motassadeq, moved in at the start of 1997. "Mzoudi was quieter than before, he seemed like he could not make his own decisions," Martens testified. "Mounir was...