Iran blast adds fuel to US–Iran nuclear standoff as Geneva talks wobble

As US–Iran nuclear negotiations continue in Geneva, yet another mystery explosion and intense blaze have hit an industrial site in southern Iran, adding to a string of recent, unexplained incidents nationwide. Firefighting operations are underway, but authorities have so far declined to disclose the cause, fueling suspicions of sabotage or covert strikes at a time when multiple blasts and fires have been reported in Tehran province and other regions over the past three weeks.