The 20-Year Standpipe: U.S. Demands Decades of Nuclear Silence from Tehran
A high-stakes nuclear deadlock: The U.S. proposes a massive 20-year freeze on Iranian uranium enrichment to secure regional stability. As Tehran pushes for a shorter timeline, the outcome of these negotiations will determine the future of the Middle East's nuclear landscape.
The United States proposed that Iran accept a 20-year moratorium on uranium enrichment during weekend talks in Islamabad, according to a U.S. official and a separate source who spoke to Axios. Iran responded with a counteroffer of a shorter, single-digit timeframe.
Disputes over enrichment and Iran's uranium stockpile remained the central obstacle to a deal. Washington also demanded the removal of all highly enriched uranium from Iranian territory. Tehran said it would agree to a monitored down-blending process instead, the two sources said.
Pakistani, Egyptian, and Turkish mediators are working to close the gaps before a ceasefire deadline on April 21. President Trump announced a blockade on Iran to increase negotiating pressure, though a U.S. official said talks remain ongoing and are moving forward.
Iranian officials believed a preliminary agreement was within reach by Sunday morning, but were caught off guard when Vice President Vance said no deal was imminent, placed blame on Iran, and announced the U.S. delegation was departing Islamabad.
Iranian lawmaker Seyyed Mahmoud Nabavian, a member of the negotiating team, said U.S. demands on enrichment and uranium removal were what blocked an agreement. Israeli Prime Minister Benjamin Netanyahu said Vance told him the core issue was the full removal of enriched material and a halt to enrichment for years, possibly decades.
Pakistani Prime Minister Shehbaz Sharif said mediators are continuing efforts to resolve outstanding differences. Egyptian Foreign Minister Badr Abdelatty is expected in Washington this week for meetings with Secretary of State Marco Rubio. Turkish Foreign Minister Hakan Fidan and intelligence chief Ibrahim Kalin are also involved in the mediation effort.
Fidan said opening positions in negotiations are often maximalist and that both sides appear sincere about reaching and sustaining a ceasefire. He expects Iran to respond to the U.S. proposal within days and said a 45- to 60-day ceasefire extension could be on the table. He cautioned that treating enrichment as a binary issue could become a serious obstacle, but said mediators would work to overcome it.