Journalist Yosri Fouda of the Arabic television channel Al Jazeera reported that in April 2002 Khalid Sheikh Mohammed admitted his involvement in the attacks , along with Ramzi bin al-Shibh . The 9/11 Commission Report determined that the animosity towards the United States felt by Mohammed , the principal architect of the 9/11 attacks , stemmed from his " violent disagreement with U.S. foreign policy favoring Israel " . Mohammed was also an adviser and financier of the 1993 World Trade Center bombing and the uncle of Ramzi Yousef , the lead bomber in that attack
1993 World Trade Center bombing
1993 World Trade Center bombing
September 11 attacks