JD Vance left Islamabad on 12 April after two days of talks at the Serena Hotel, having presented what he called a "final and best offer". Iran refused to commit to forgoing nuclear weapons. No joint statement was issued, no written agreement produced, and no date set for a next round.
The talks opened on 11 April as proximity negotiations, with Pakistani officials shuttling between the two delegations, before shifting to direct sessions. Both sides exchanged written proposals for the first time, but the paper produced no convergence. Vance told reporters the breakdown was "bad news for Iran much more than for the US."
Three structural deadlocks killed the text: Iran's refusal to forswear nuclear weapons, its refusal to hand over its enriched uranium, and its demand for Hormuz toll-collection authority. Each one alone would have blocked an agreement. Together they left no negotiating space.
The ceasefire, announced on 7 April, included a negotiation window of two weeks or slightly longer. That window now has no framework, no next venue, and no interlocutor claiming authority to extend it. OFAC's General License U, covered in detail in the sanctions event below, expires in seven days with no Treasury renewal signal issued. The ceasefire itself expires at the end of the month. Two deadlines, zero framework.
