Diplomatic cables obtained by WikiLeaks and published by the Guardian last year revealed that King Abdullah, who has ruled Saudi Arabia since 2005, had privately warned Washington in 2008 that if Iran developed nuclear weapons "everyone in the region would do the same, including Saudi Arabia".
Prince Turki al-Faisal, a former Saudi intelligence chief and ambassador to Washington, warned senior Nato military officials that the existence of such a device "would compel Saudi Arabia … to pursue policies which could lead to untold and possibly dramatic consequences".
"We cannot live in a situation where Iran has nuclear weapons and we don't. It's as simple as that," the official said. "If Iran develops a nuclear weapon, that will be unacceptable to us and we will have to follow suit."