Israel-Iran conflict: What to know about US' bunker-buster bombs | CNA Explains

CNAAbout 2 min readJun 18, 2025Watch original
THE SUMMARYAI-generated

Key Concepts:

  • Iranian Nuclear Program
  • Fordo Enrichment Plant
  • Bunker Buster Bombs
  • B2 Spirit Stealth Bomber
  • International Atomic Energy Agency (IAEA)
  • Highly Enriched Uranium
  • Diplomacy

Israel's Attacks on Iran's Nuclear Program

Israel has been conducting missile strikes on Iran for over five days, targeting what it perceives as a significant threat: Iran's nuclear program. The primary focus is the Fordo enrichment plant, Iran's second nuclear enrichment site after Natanz.

Fordo Enrichment Plant: Location and Defenses

Fordo is located approximately 95 km from Tehran, near the city of K. It is buried about 80 meters into a mountain, providing substantial protection. The facility is heavily defended by Iranian and Russian surface-to-air missile systems. Israeli strikes may have already targeted some of these air defenses.

Israel's Limited Capabilities and the Need for US Assistance

Israel believes it can significantly damage Iran's nuclear capabilities, especially with US assistance. To destroy the Fordo enrichment plant, which is deeply buried, Israel would need bunker buster bombs. Currently, Israel lacks the conventional capabilities to effectively target such a facility.

Bunker Buster Bombs: Definition and US Capabilities

A bunker buster is a type of bomb designed to penetrate hardened underground targets before detonating. The US possesses a specialized bunker buster, a 13,600 kg precision-guided bomb capable of penetrating approximately 61 meters into the ground. Multiple bombs can be dropped in succession to achieve deeper penetration.

Delivery Challenges and the Role of the B2 Spirit

Only the US has configured and programmed the B2 Spirit stealth bomber to deliver these bunker buster bombs. This is why Israel would need US involvement for such an operation.

Potential Consequences of a US-Backed Strike

A direct US involvement in striking Fordo carries significant risks. While the IAEA has confirmed that Fordo is producing highly enriched uranium, a strike could potentially release nuclear material. Previous strikes on other sites only caused local contamination.

Diplomatic Implications

Beyond the physical damage, a US-backed strike could severely damage any remaining prospects for diplomacy. While Trump has expressed a desire to negotiate with Iran regarding its nuclear program, joining Israel's attacks could completely close that door.

Conclusion

Israel's ongoing attacks on Iran's nuclear program, particularly the Fordo enrichment plant, highlight the limitations of Israel's capabilities and the potential need for US assistance. However, a US-backed strike, while potentially effective in damaging Fordo, carries significant risks, including nuclear contamination and the collapse of diplomatic efforts. The decision to use bunker buster bombs and involve the US is a complex one with far-reaching consequences.

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