Diplomatic expulsions of Iranian ambassadors and senior diplomats have occurred multiple times in 2025–2026 amid accusations of interference, espionage, and proxy-linked activities in host countries. Recent catalysts include Kuwait’s October 28 summons of its Iranian ambassador over a denied assassination plot tied to court sentences for Iran-linked defendants, Germany’s mid-October summons regarding alleged attack planning, and earlier actions such as Argentina’s September expulsion of a chargé d’affaires and France’s August removals. These steps reflect responses to Iranian embassy statements, regional security incidents, and broader US-Israel-Iran tensions that began in February 2026. Ongoing indirect talks in Doha and potential post-US midterm developments could influence further measures, as countries weigh Vienna Convention obligations against national security concerns. Trader consensus prices the probability of at least one additional full ambassador expulsion by year-end based on these recurring friction points.