“The most significant security incident to date targeting Saudi [oil] facilities came…on February 24, 2006. Terrorists affiliated with AQAP [Al Qaeda in the Arabian Peninsula] attacked the Saudi Aramco-operated refinery at Abqaiq, which processes two-thirds of Saudi Arabia’s crude oil. …Local news sources played down the incident, with Nawaf Obaid, a Saudi security adviser, telling the Arab News that it was proof of ‘how tight and impenetrable the existing Saudi security system is.’ Nonetheless, the price of oil jumped by $2.37 a barrel.”
– Daveed Gartenstein-Ross, Bin Laden’s Legacy, Pages 159-160