Key Facts

• President Trump said Iran’s nuclear program was "completely obliterated" last June after strikes.
• Dr. Matthew Bunn, a former White House nuclear adviser, said this claim is false because Iran still has a large uranium stockpile.
• Iran is believed to have about 970 pounds of uranium enriched to 60%, enough for 10 to 11 nuclear bombs.
• The uranium is stored in deep tunnels beneath the Isfahan nuclear facility, inside containers the size of scuba tanks.
• Satellite images show Iran has blocked tunnel entrances and set up roadblocks, possibly to prevent a U.S. or Israeli raid.
• A second potential nuclear site is Pickaxe Mountain, hidden deep underground under solid rock.
• Military experts say bombs might not reach the uranium storage, meaning any operation to retrieve it would require thousands of troops on the ground.
• An expert compared the effort needed in Iran to a 1994 mission in Kazakhstan that involved only 30 people but said Iran would be much harder due to its size and security.