Saudi vs Iran

Should the US intervene in the dispute between Saudi Arabia and Iran. We no longer need their oil so we can afford to sit on the sidelines and watch, or can we. The experts agree that it would be a close victory for Iran if they went to war and if that is the outcome can the US live with that. Iran having control of Saudi oil would mean that oil would no longer be sold in dollars but in Iranian rials. Iran would then be able to dictate oil policy for the rest of the world. Their income would be vastly more than it is today. They would not have to close off the Straits of Hormuz to restrict the supply and run up the price. At that point would those who now opposed intervention change their minds. Would the Monday morning quarterbacks be claiming that the US should have helped the Saudis.