The U.S. has implemented a complete blockade of Iranian ports, cutting off Tehran's international sea trade, which accounts for about 90% of its economy. The move comes as the White House signals a potential diplomatic solution to the conflict in the Middle East. The blockade involves over 10,000 U.N. troops, over a dozen Navy ships and fighter jets, and is estimated to cost Iran approximately $435 million a day in combined economic damage. The International Monetary Fund has cut its global growth forecast to 3.1% for 2026 and warned of a "adverse scenario" where oil prices could stay around $100 per barrel.