US Vice President JD Vance has downplayed reports of a diplomatic snub by the Iranian delegation during talks in Switzerland, saying such gestures should not be overinterpreted. Referring to nearly nine hours of negotiations, Vance said the discussions were productive and that progress was being made despite visible tensions. He also urged observers not to place too much weight on Iranian social media messaging, describing Iranian negotiators as often difficult to read. The comments come as Washington and Tehran continue efforts to advance negotiations on key regional and nuclear issues.