I think this is the root of the Saudi plan. The Iranian economy is already on the rocks with the economic sanctions over their nuke program and the Saudi's are trying to kick the last support out from under them. The triple pressure of the cost of supporting Iraq and fighting their war for them , the economic sanctions , and low oil prices the Iranians are in a tight spot. It also doubles down the pressure on Russia with economic sanctions and capital flight being bolstered by low oil prices. Low oil prices may slow domestic drilling in the short run but it's killing two of our enemies.
