Britons left in jail amid fears that Saudi Arabia could fall to al-Qaeda

Saudi Arabia is teetering on the brink of collapse, fuelling Foreign Office fears of an extremist takeover of one of the West's key allies in the war on terror.

Anti-government demonstrations have swept the desert kingdom in the past months in protest at the pro-American stance of the de facto ruler, Prince Abdullah.

At the same time, Whitehall officials are concerned that Abdullah could face a palace coup from elements within the royal family sympathetic to al-Qaeda.

Saudi sources said the Pentagon had recently sponsored a secret conference to look at options if the royal family fell.
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