Biographers of Khalid Shaikh Mohammed ( " architect " of the 9/11 attacks ) and Ramzi Yousef ( leader of the 1993 World Trade Center bombing that Yousef hoped would topple the North Tower , killing tens of thousands of office workers ) have noted the influence of Wahhabism through Ramzi Yousef 's father , Muhammad Abdul Karim , who was introduced to Wahhabism in the early 1980s while working in Kuwait
9/11 attacks
September 11 attacks
International propagation of Salafism and Wahhabism