Saudi Arabia implementing reforms 20 years after September 11 attacks

Saudi police women, who were recently deployed to the service, from right to left, Samar, Alaa, and Bashair, stand alert in front of the Kaaba, the cubic building at the Grand Mosque, during the annual hajj pilgrimage (Amr Nabil/AP)

The Saudi Arabia of 2021 is far different from the Saudi Arabia of September 11 2001.

All but four of the 19 hijackers on 9/11 were Saudi citizens, and the Saudi kingdom was the birthplace of Osama bin Laden, the head of al Qaida and mastermind of the attack 20 years ago.