This article makes four contributions. First, it investigates tire extent, to which the U.S. fracking boom has caused Arab oil exports to decline since late 2008. Second, tire article quantifies for the first time by how much the U.S. fracking boom has lowered the global price of oil. Using a novel econometric methodology, it is shown that in mid-2014, for example, the Brent price of crude oil was lower by $10 than it would have been in the absence of the fracking boom. Third, the article provides evidence that the decline in Saudi net foreign assets between mid-2014 and August 2015 would have been reduced by 27% in the absence of the fracking boom. Finally, the article discusses the policy choices faced by Saudi Arabia and other Arab oil producers.