The heir to the Saudi throne Prince Sultan bin Abdel Aziz died from colon cancer.
The prince was one of the most powerful princes in Saudi Arabia. He helped the Saudi monarchy walk the line between delicate relations abroad with the U.S. and controlling the spread of domestic terrorism as home.
However for the first time the succession of power is different. It's not clear whether the king will put up the next crown prince or the Allegiance Council he created.
This also raises questions for the future of the leadership in Saudi Arabia. The prince was staunch supporter of maintaining the delicate U.S. relationship. President Obama referred to the prince as a "valued friend," said Obama.
The prince died at New York's Presbyterian hospital where had been battling colon cancer.