FILE PHOTO: Oman's Sultan Qaboos bin Said Al-Said, left, Saudi Arabia's King Abdullah bin Abdul Aziz Al Saud, center, and Mahmoud Ahmadinejad, Iran's president, right, walk into the opening ceremony of the 28th Gulf Cooperation Council held in Doha, Qatar, on Monday, Dec. 3, 2007. King Abdullah has died and will be succeeded by his half-brother, Crown Prince Salman, at the helm of the world's biggest oil exporter. Photographer: Charles Crowell/Bloomberg via Getty Images
