Iran’s refusal to accept a complete halt to uranium enrichment remains the dominant factor sustaining the 82% trader consensus against an agreement by June 30. In recent diplomatic exchanges, Tehran has reiterated its red line on domestic enrichment rights while proposing only limited pauses or discussions deferred to later negotiation phases, alongside demands for sanctions relief and security guarantees. As of mid-May, Iranian officials rejected proposals to transfer or dilute existing stockpiles and warned of possible escalation to 90% enrichment levels should military tensions resume. These positions align with historical negotiating patterns in which Iran has preserved core nuclear capabilities despite external pressure, leaving little indication that a binding commitment to end all enrichment activities will materialize before the June deadline.