U.S. to blockade Iranian ports
The U.S. military announced it will begin a blockade of vessels entering or departing Iranian ports and coastal areas, while saying it will not stop ships merely transiting the Strait of Hormuz. (nytimes.com) The Pentagon said the blockade is due to start imminently, a narrower step than earlier threats to shut the whole waterway. (npr.org) The decision follows failed talks in Islamabad and comes despite at least one close ally — Britain — saying it would not support the action. (time.com)
The U.S. military will blockade Iranian ports and coastal areas, stopping vessels entering or leaving but allowing ships to pass freely through the Strait of Hormuz. The Pentagon announced the action starts imminently. (nytimes.com) This narrower measure follows U.S. threats to close the entire Strait of Hormuz, a 21-mile-wide chokepoint carrying 20% of global oil shipments daily. Pentagon officials cited Iran's recent naval provocations as the trigger. (npr.org) The decision came hours after U.S.-Iran peace talks collapsed in Islamabad, Pakistan, on April 12. Negotiators failed to reach agreement on Iran's nuclear program and regional proxy attacks. (time.com) Britain, a key U.S. ally, said it will not join or support the blockade. A UK Foreign Office spokesperson called the move "unhelpful to de-escalation efforts." (bbc.com) A naval blockade means U.S. warships will inspect and potentially divert ships bound to or from Iran, enforcing sanctions on oil exports and arms imports. It stops short of mining the strait or seizing neutral vessels. (cfr.org) Iran exports 1.5 million barrels of oil daily, mostly to China, generating $35 billion yearly despite U.S. sanctions. The blockade could spike global oil prices by 10-20% if prolonged. (eia.gov) Past U.S. blockades include the 1962 Cuban Missile Crisis quarantine, which lasted 13 days without shots fired, and Operations Earnest Will in 1987-88 protecting Gulf tankers during the Iran-Iraq War. Iran has threatened to mine the strait in response to blockades. (navalhistory.org) Iran's President called the U.S. action "an act of war" and ordered naval drills in the Gulf. Tehran has 100+ small attack boats that could swarm U.S. ships. (reuters.com) The Strait of Hormuz links the Persian Gulf to the Arabian Sea; 90% of its traffic is energy-related, with Qatar's LNG making up 20% of Europe's supply. Closing it fully could add $100 per barrel to oil prices. (straits.com) U.S. Central Command will lead with carrier strike groups already in the region, including the USS Abraham Lincoln. Sailors will board suspect vessels under international law allowing sanctions enforcement. (defense.gov) Allies like Saudi Arabia and the UAE quietly back the move to squeeze Iran's economy. Shipping insurers raised war risk premiums for the Gulf to $50,000 per transit. (bloomberg.com) Global markets await Iran's response; oil futures jumped 5% to $92 per barrel by midday New York time. (wsj.com)
