US did not use bunker-buster bombs on Iran's Isfahan site - CNN

The US did not use bunker-buster bombs on Iran’s underground nuclear facility in Isfahan during last week’s military strikes because the site’s depth made the weapons ineffective, Chairman of the Joint Chiefs of Staff Gen. Dan Caine told US lawmakers in a classified briefing, CNN reported Friday.

According to multiple sources familiar with the briefing, Caine said the Isfahan site, believed to house a significant portion of Iran’s enriched uranium, was targeted instead with Tomahawk missiles launched from a submarine. The facility’s deeply buried tunnels were not fully destroyed.

By contrast, US B-2 bombers dropped bunker-buster bombs on other nuclear facilities, including Fordow and Natanz.