US and Iran Narrow Nuclear Talks to Four Key Issues: Enrichment, Stockpiles, Site Closures, and Inspections

The United States and Iran are engaged in nuclear negotiations centered on four critical issues that will determine the viability of a broader agreement. First, the US seeks a 20-year pause on uranium enrichment, though Iran has proposed 10 years with potential compromise at 15 years; President Trump has indicated flexibility but uncertainty remains about accepting a 15-year deal. Second, the sides disagree on Iran's existing 11-ton stockpile of enriched uranium—the US wants it reduced or downblended under international supervision, while Iran prefers to retain control with limited outside involvement. Third, the US demands complete closure of Iran's three main nuclear sites (Natanz, Fordo, and Isfahan), but Iran has agreed to close only two, insisting on keeping one operational based on its claimed right to peaceful uranium enrichment; US officials worry that even one open site could be repurposed for weapons development, citing past experience when Iran restarted Fordo activities after the 2015 deal. Fourth, the US wants the International Atomic Energy Agency to conduct unannounced snap inspections at any suspected nuclear site, including military bases, though Iran has historically restricted inspector access to certain locations. A successful agreement incorporating all four conditions would represent a significantly stricter arrangement than the 2015 nuclear deal.