Will Dilution of Iranian Uranium be in a US-Iran deal in 2026?

Prediction markets put the probability at 10%: Will Dilution of Iranian Uranium be in a US-Iran deal in 2026. Currently, markets see this as unlikely (10% YES).

What’s Happening

On June 17, 2026, senior US officials confirmed that a draft interim agreement with Iran explicitly calls for the dilution of Iranian uranium to be conducted on Iranian soil, rather than the export or destruction of the stockpile, according to text provided to the press. The draft accord, which also includes reopening the Strait of Hormuz and waiving oil sanctions, specifies that Tehran will maintain its current nuclear status and refrain from further enrichment pending a final comprehensive deal. The question of whether the dilution of Iranian uranium be in a US-Iran deal in 2026 has moved from abstract speculation to concrete negotiation, with the Associated Press reporting that US officials describe the dilution requirement as a minimum threshold for the interim phase [Associated Press, Jun 17].

The mechanics of this provision remain contentious, as Iran’s stockpile of 440 kilograms of uranium enriched to 60 percent — roughly 11 nuclear weapons’ worth — would be downblended to lower purity levels, a process that the Foundation for Defense of Democracies argues is reversible and inadequate for permanent nonproliferation. Reuters reported on June 14, 2026 that Tehran agreed to the dilution of its highly enriched uranium on Iranian soil under a future comprehensive agreement, while the Times of Israel noted on June 9, 2026 that US officials touted a 15-year halt on enrichment as a key deliverable. Hawks, including Israeli officials, have publicly criticized the dilution approach as insufficient, arguing that only physical removal of the material can guarantee it will not be re-enriched, while analysts caution that forcing export could collapse the entire negotiation framework [Times of Israel, Jun 09].

The structural factor determining whether the dilution of Iranian uranium be in a US-Iran deal in 2026 ultimately hinges on the verification regime and the sequencing of sanctions relief. The draft text, as reported by France 24 on June 17, 2026, links the dilution requirement to the reopening of the Strait of Hormuz and the resumption of Iranian oil sales, creating a direct economic incentive for Tehran to comply. However, the interim deal’s language leaves the final disposition of the stockpile — whether dilution alone suffices or whether additional measures are required — to future comprehensive negotiations, which US officials say are focused on four key issues including a halt on enrichment. The market’s current 10 percent probability reflects skepticism that dilution alone will satisfy all parties, particularly given the reversible nature of the process and the unresolved question of international inspection access to Iranian facilities [France 24, Jun 17].

Traded on Polymarket — $116K Volume

Polymarket prices this at 10c YES with $116K in volume. Moderate liquidity — use limit orders for positions above $1K to avoid moving the price.