A bit technical logic applied. With the facilities in place why should Iran have stopped at 60% enrichment. They did likely let the centrifuges run to get weapon grade material. Then disperse it with camouflaged transportation to various location. A mule carriage will do. Not much shielding for highly enriched Uranium metal is required. By all means we can assume that they already have some working uranium bombs. But now they are in the same problem as all others with nuclear bombs. You can not use them, otherwise your country will be toast. Israel has a working second strike capability with their subs, and Iran knows this. All large population centers in Iran would be glassed if they would use a single nuke against Israel.