Crown Prince Sultan bin Abdulaziz, Deputy Premier, Minister of Defense and Aviation and Inspector General, left here today for abroad on a special leave. At Riyadh Air Base Airport, he was seen off by Prince Fahd bin Mohammad bin Abdulaziz, Prince Naif bin Abdulaziz, the Interior Minister, Prince Salman bin Abdulaziz, the Governor of Riyadh Region, other princes, ministers and senior officials.