Saudi Crown Prince Sultan bin Abdulaziz, who was buried in Riyadh Tuesday, was a central figure in the world's top oil exporter who dominated defense policy and was long seen as a future king.

Crown Prince Sultan bin Abdel Aziz, seen here attending a 2009 graduation ceremony for air force officers in Riyadh, died early Saturday. Fahad Shadeed / Reuters file Oct. 22, 2011, 12:31 AM EDT ...

Saudi Crown Prince Sultan bin Abdulaziz, who died on Saturday, was a central figure in the world's top oil exporter who dominated defence policy and was long seen as a future king.