he didn't say that he thinks so. he only told what people think . and its true . many people for so many years believe that us govt. alongwith israel was partners in this case. that's why many jews were on holidays from WTC on that day and if we write Q33NY in ms word in wingdings , we will get the plan. Offcourse obama has to defend himself by saying so but its not impossible , often strategy is kill ur own man and blame other to get rid of both as no one is going to blame u for ur own men murder, just watched 24 on axn with character american president.God knows best.