"What Happened: A Swiss national detained on espionage charges was found dead in Semnan prison, 180km east of Tehran. Prison officials' rescue attempts were unsuccessful after the detainee took their own life while alone in their cell last Thursday. Why It Matters: The incident could strain diplomatic relations as Switzerland serves as a crucial intermediary between the US and Iran. This death follows a pattern of foreign national detentions in Iran, raising international concerns about detainee treatment."