Trump says his top goal is stopping Iran from ever getting a nuclear weapon — but key parts of its program may still be out of reach.
Iran reportedly has nearly 970 pounds of highly enriched uranium stored in underground tunnels too deep for bunker-buster bombs to reach.
Military capture would be "very perilous," according to a former national security official.
https://theconversation.com/irans-nuclear-materials-and-equipment-remain-a-danger-in-an-active-war-zone-278008
