Iran Has Material for Dirty Bomb, Analysts Warn
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- Iran possesses 440 kg of uranium enriched to 60% (per IAEA), and US Special Envoy Steve Witkoff told CNBC on March 10 that Iran could "easily" convert that material into a dirty bomb.
- A dirty bomb (radiological dispersal device) spreads radioactive contamination via a conventional explosive rather than causing a nuclear blast; the WHO warns long-term exposure raises risks of leukemia, cancers, cardiovascular disease, and cataracts.
- The US-Israel-Iran war is in its fourth week with Iran on the tactical backfoot, and US/Israeli strikes have killed Supreme Leader Ali Khamenei—who had issued a fatwa against such weapons—and Ali Larijani, eroding the moderating guardrails against dirty bomb deployment.
- Andreas Krieg of King's College London assessed Iran is "highly unlikely" to deploy a dirty bomb given catastrophic political, military, and reputational costs, while journalist Gerald Posner cited a US national security analyst saying Iran might use one if it believed it faced total defeat.
- Security expert Chris Kremidas-Courtney wrote a dirty bomb could be deployed through proxies like Hezbollah or the Houthis, or used in chokepoints like the Strait of Hormuz to disrupt shipping and spike global oil prices.
- A 2012 USC study estimated a dirty bomb attack in Los Angeles could cause nearly $16 billion in losses over a decade, driven by cleanup costs and prolonged psychological disruption.
Why it matters: With Khamenei's fatwa voided by his death and moderating leaders like Larijani eliminated, Iran's hardliners retain both the 440 kg of 60%-enriched uranium and a tactical motive to escalate—and a dirty bomb strike on a chokepoint like the Strait of Hormuz could disrupt global shipping and spike oil prices far beyond the blast radius.
