Osama Bin Laden is considered the most dangerous terrorist in the world by the U.S. government. He is believed to have plotted or inspired attacks such as the 1993 World Trade Center bombing, the 1995 Saudi National Guard training center bombing, and the 1998 U.S. embassy bombings in Kenya and Tanzania. On September 11, 2001, Al Qaeda hijackers flew planes into the World Trade Center towers and the Pentagon, with Bin Laden issuing a "fatwa" motivating these attacks. While only about 15% of Muslims are fundamentalists, Bin Laden's message resonates with young Muslims longing to restore Islam's former glory.