US-Iran diplomatic tensions have intensified following the 81st UN General Assembly, where Washington ordered Iran's full delegation to depart immediately after sessions ended on September 28. US officials reported that two delegation members remained in New York beyond the deadline, leading to their removal on October 2-3, an action framed by Secretary of State Marco Rubio's office as enforcement of host-nation rules. Tehran rejected the characterization as an expulsion, insisting departures followed a pre-notified schedule communicated in mid-September. This episode occurs amid faltering bilateral talks, including disputes over the Strait of Hormuz, and reflects broader patterns of reciprocal diplomatic measures in response to regional conflicts and sanctions enforcement. Traders monitor similar actions by other governments as indicators of escalating or de-escalating pressures on Iranian diplomatic presence.