Iran is rising and the U.S. is unsteady in the region. The reality is that the U.S. hardly needs MidEast oil anymore. North America is more important to U.S. energy markets. The U.S. imports 3x as much petroleum from Canada as from Saudi Arabia. So the House of Saud is both fearful and no longer restrained.
[0]https://www.theguardian.com/world/2017/sep/14/saudi-crown-pr...