U.S. says Hormuz blockade 'fully implemented,' while signaling diplomatic off-ramp for Iran

The United States has fully implemented a naval blockade of Iranian ports, effectively cutting off Tehran’s international sea trade that accounts for more than 90% of its economy. The U.S. Central Command confirmed the blockade is operational less than 36 hours after President Donald Trump ordered it, with over 10,000 troops, a dozen Navy ships, and fighter jets deployed in the Gulf of Oman and Arabian Sea. The blockade aims to halt Iran’s seaborne trade, valued at approximately $109.7 billion annually, by controlling the strategic Strait of Hormuz, a critical chokepoint for global oil shipments. During the first full day of enforcement, U.S. forces prevented six merchant vessels from passing, ordering them to return to Iranian ports. However, maritime intelligence firm Windward reported that a limited number of vessels, including a U.S.-sanctioned Chinese-owned tanker, managed to transit the Strait. Analysts noted that transit is now restricted mainly to sanctioned, falsely flagged, or high-risk ships, signaling early compliance with the blockade’s restrictions. The blockade is estimated to cost Iran around $435 million daily in economic damage, severely impacting its ability to export oil and other goods. The blockade follows a period of heightened tensions, including joint U.S.-Israeli strikes on Iranian territory and Iran’s retaliatory attempts to choke the Strait of Hormuz, which previously carried about 20% of the world’s oil supplies. While the blockade strengthens U.S. maritime control in the region, it risks disrupting global energy flows and complicating relations with major Iranian oil buyers such as China and India. Despite the military enforcement, the White House has simultaneously indicated a willingness to pursue diplomatic negotiations with Tehran, suggesting an off-ramp to the escalating conflict in the Middle East.