US did not use bunker-buster bombs on one of Iran’s nuclear sites, top general tells lawmakers, citing depth of the target

The US military did not use bunker-buster bombs on one of Iran’s largest nuclear sites last weekend because the site is so deep that the bombs likely would not have been effective, the US’ top general told senators during a briefing on Thursday.

The comment by Joint Chiefs of Staff Chairman Gen. Dan Caine, which was described by three people who heard his remarks and a fourth who was briefed on them, is the first known explanation given for why the US military did not use the Massive Ordnance Penetrator bomb against the Isfahan site in central Iran. US officials believe Isfahan’s underground structures house nearly 60% of Iran’s enriched uranium stockpile, which Iran would need in order to ever produce a nuclear weapon...