Saudis mobilise thousands of troops to quell growing revolt

``Saudi Arabia's worst nightmare – the arrival of the new Arab awakening of rebellion and insurrection in the kingdom – is now casting its long shadow over the House of Saud. Provoked by the Shia majority uprising in the neighbouring Sunni-dominated island of Bahrain, where protesters are calling for the overthrow of the ruling al-Khalifa family, King Abdullah of Saudi Arabia is widely reported to have told the Bahraini authorities that if they do not crush their Shia revolt, his own forces will. ''