The United States Navy began enforcing a blockade of all maritime traffic entering and exiting Iranian ports on Monday, April 13, 2026, at 10 a.m. ET, targeting Tehran’s remaining oil export revenue without halting global shipping through the Strait of Hormuz.
Key Takeaways:
The U.S. Navy began enforcing a blockade of Iranian ports on April 13, 2026, targeting Tehran’s roughly 2 million barrels per day in oil exports. WTI crude climbed above $94 per barrel following CENTCOM’s announcement, while the Dow Jones dropped 246.90 points on escalation fears. CENTCOM says the blockade will remain in force until Iran returns to negotiations, with no fixed end date announced. Iran Naval Blockade 2026: U.S. Cuts off Tehran Oil ExportsExecuting the blockade is a large-scale naval operation. Analysts say it requires multiple carrier strike groups for air cover, dozens of destroyers and frigates, and support from regional allies. The Strait presents real tactical exposure to Iranian anti-ship missiles, drones, fast-attack boats, and mines, making enforcement a high-stakes proposition from day one.
Iran’s Islamic Revolutionary Guard Corps called the move an “act of piracy” and declared it illegal under international law. Iranian officials warned that “no port in the Persian Gulf or Gulf of Oman will be safe” if Iranian ports are targeted, and restated their position that the Strait is “either for everyone or for no one.” Tehran also insisted diplomacy remains the only legitimate path forward.
