Its roots lay without doubt in the events of 9/11, when the fruits of Saudi negect of the violent traits in purist Islam came home to roost with unprecedented vengeance.

• 根源无疑是9/11事件的发生，沙特阿拉伯对对纯化论伊斯兰教徒中的暴力特征的忽视使他们招致了史无前例的复仇报应。