"For the past eight decades Saudi Arabia has been careful. Using its vast oil wealth, it’s quietly spread its ultra-conservative brand of Islam throughout the Muslim world, secretly undermined secular regimes in its region, and prudently kept to the shadows while others did the fighting and dying. It was Saudi money that fueled the Mujahedeen in Afghanistan, underwrote Saddam Hussein’s invasion of Iran, and bankrolled Islamic movements and terrorist groups from the Caucasus to the Hindu Kush."