The Iran Red Sea trade threat has intensified sharply, with tanker traffic through the Strait of Hormuz falling below 10% of its normal daily volume. This is a critical global chokepoint. The crisis is escalating fast. Iran has warned it may expand disruption into the Red Sea and nearby routes. The U.S. blockade ordered by Donald Trump has increased tensions further. Global oil supply is at risk. Shipping costs are rising. Markets are reacting. The Iran Red Sea trade threat now signals deeper instability ahead.