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US Strikes Iran’s Buried Nuclear Sites With Bunker-Buster Bombs

The operation used B-2 stealth bombers armed with Massive Ordnance Penetrators to breach underground centrifuge halls, prompting Tehran to vow retaliation.

This photo released in November 2019 by the Atomic Energy Organization of Iran shows centrifuge machines in the Natanz uranium enrichment facility.
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This satellite image provided by Maxar Technologies shows the Fordo enrichment facility in Iran on Jan. 24, 2025. (Maxar Technologies via AP)
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Overview

  • President Donald Trump announced on Truth Social that US forces struck the Fordow, Isfahan and Natanz nuclear sites Saturday evening as tensions with Iran escalated.
  • The strikes relied on B-2 stealth bombers carrying Massive Ordnance Penetrators capable of penetrating roughly 300 feet of rock at the Fordow facility.
  • Fordow houses about 2,700 centrifuges enriching uranium to 60% purity, a stockpile that could yield enough weapon-grade material for up to nine bombs in three weeks.
  • Natanz includes six above-ground halls and three subterranean chambers for up to 50,000 centrifuges, while Isfahan hosts research reactors, fuel conversion and cladding plants.
  • Tehran’s vow of retaliation raises the prospect of a wider Middle East conflict and further complicates stalled diplomatic efforts to curb Iran’s nuclear ambitions.