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

CNAAbout 2 min readJun 20, 2025Watch original
THE SUMMARYAI-generated

Key Concepts:

  • Iran's nuclear program
  • Fordow (FDA) nuclear enrichment site
  • Natanz nuclear enrichment site
  • Bunker buster bombs
  • GBU-57 Massive Ordnance Penetrator (MOP)
  • B-2 Spirit stealth bomber
  • Highly enriched uranium (HEU)
  • International Atomic Energy Agency (IAEA)
  • Diplomacy with Iran

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 focus is on damaging Iran's nuclear capabilities, particularly at the Fordow (FDA) nuclear enrichment site.

Fordow Nuclear Enrichment Site

Fordow is Iran's second nuclear enrichment site, located approximately 95 km from Tehran. It is buried about 80 meters into a mountain near the city of K. This depth makes it a challenging target for conventional weapons.

Potential Use of American Bunker Buster Bombs

There is speculation that Israel may need to consult with Washington regarding the potential use of American bunker buster bombs. These bombs are designed to penetrate hardened underground targets before detonating.

GBU-57 Massive Ordnance Penetrator (MOP)

The US possesses a specialized bunker buster bomb known as the GBU-57 Massive Ordnance Penetrator (MOP). This precision-guided bomb weighs 13,600 kg and can penetrate approximately 61 meters into the ground. Multiple bombs can be dropped in succession to achieve deeper penetration.

Delivery Challenges and the B-2 Spirit

Israel cannot deliver the GBU-57 independently because only the US has configured and programmed the B-2 Spirit stealth bomber to deploy it.

Risks of Striking Fordow

The International Atomic Energy Agency (IAEA) has confirmed that Fordow is producing highly enriched uranium (HEU). A strike on the facility could potentially release nuclear material, leading to contamination. Previous attacks on Natanz only resulted in local contamination.

Impact on Diplomacy

A direct US involvement in attacking Fordow could eliminate any remaining prospects for diplomacy with Iran. While Trump has expressed a desire to negotiate with Iran about its nuclear program, joining Israel's attacks could foreclose that possibility.

Conclusion

Israel's ongoing attacks on Iran's nuclear program, particularly the Fordow site, raise the possibility of US involvement through the use of bunker buster bombs. While these weapons could significantly damage Fordow, they also carry substantial risks, including nuclear contamination and the collapse of diplomatic efforts. The US faces a critical decision balancing the potential benefits of disabling Iran's nuclear capabilities against the potential consequences of escalation and the loss of diplomatic opportunities.

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