A sharp war of words has followed the collapse of Iran-U.S. talks in Islamabad. Former Iranian foreign minister Mohammad Javad Zarif accused Washington of derailing negotiations by imposing unacceptable terms, insisting Iran will not bow to pressure. Responding to JD Vance, Zarif said talks failed because the U.S. expected Tehran to accept its conditions. Vance, however, maintained Iran rejected a “final and best offer,” particularly on nuclear commitments. The breakdown highlights a deep divide, with the U.S. demanding guarantees and Iran framing the dispute as one of sovereignty, leaving diplomacy stalled once again.