Trump haters are concerned that Trump will "stain" the Lincoln Memorial with a speech on Independence Day. But Trump is extremely unlikely to ever match Lincoln's blood-soaked legacy. And that's a good thing.
Supply, demand, and prices affect human usage of natural resources in such a way that the most scarce and valued resources are economized and preserved. The practical effect is that valuable resources never really run out.
There is no evidence that Iran is likely to capitulate to American demands. The historical record demonstrates that great powers can inflict enormous punishment on their adversaries and yet the pain rarely causes target states to surrender.