The US has targeted industries tied to Iran's weapons, oil and nuclear enrichment, and one other: pistachios. Iran once dominated the global pistachio market, earning the nickname "green gold." But decades of sanctions, tariffs and rising competition caused the US to take the lead, with California now at the heart of a billion-dollar industry. With reported US strikes targeting key Iranian pistachio production hubs, the battle over the market is no longer just economic; it's geopolitical. CGTN's Ahmed Ghoneim explains this unknown US-Iran pistachio conflict.