Iran Warns US Of 'Excessive Demands'; Vance Returns To US Empty-Handed

Diplomatic tensions escalate as Iran rejects what officials characterize as unreasonable negotiating positions from the United States. Vice President Vance's recent mission to the region concludes without significant breakthrough, highlighting deepening disagreements between Washington and Tehran. The impasse reflects ongoing challenges in nuclear diplomacy and international negotiations, with Iranian leadership signaling limited flexibility on key issues.