US official said Secretary of State Rubio demanded on Monday that Iran's delegation to the UN General Assembly immediately leave the country after negotiations stalled, according to Axios

Expelling or demanding the departure of a rival state's diplomats during a stalled negotiation is a well-worn pressure tactic, and in past US-Iran episodes it has marked escalation within a sanctions-and-talks framework rather than a precursor to direct conflict; the typical sequence has been rhetorical hardening, reciprocal measures, then either back-channel re-engagement or a drift toward enforcement actions on shipping and sanctions. The transmission channel for crude is specific: any move from diplomatic rupture toward enforcement against Iranian barrels tightens effective supply through shipping insurance, freight rates and dark-fleet costs rather than through headline production figures, and the tail risk priced in such episodes is the Strait of Hormuz, through which a large share of seaborne Gulf crude transits. Single-source reporting of this kind, attributed to one outlet citing an official, has historically carried a wide error bar and is often walked back or reframed within hours; confirmation from the State Department or a formal expulsion order is the tell that separates posture from action. What matters next is whether Tehran reciprocates, whether the talks are declared dead or merely paused, and whether any accompanying move touches sanctions waivers or maritime enforcement. As a headline, this sits in the category that has tended to add a modest geopolitical premium to the front of the oil curve while leaving the broader demand narrative intact.