US seizes 4,000-year-old Iranian swords in smuggling bust

US authorities seized 36 Bronze Age swords and 50 arrowheads at Philadelphia port, dating to 1600-1000 BCE and believed to originate from Iran. The artifacts were misdeclared, routed through multiple countries, indicating illegal excavation, trafficking. Experts say such recoveries are vital to preserving cultural heritage and preventing historically significant objects from entering black market.