What are the implications of a shrinking supply of U.S. missiles?

After months of war with Iran, the United States is facing a new challenge: stockpiles of some precision missiles are almost depleted, NPR has learned from a U.S. official who is not authorized to speak publicly on the matter. In this episode, we hear more about the implications of this weapons shortage – which one official says could make the U.S. more vulnerable in other parts of the world – and how these weapons differ from the U.S. supply of offensive weapons.