U.S. blockades Iranian ports
The U.S. announced a blockade of Iranian ports starting today as diplomacy collapsed, and oil prices jumped above $100 a barrel in early trading ( ). Washington also warned it could impose punitive tariffs — including a 50% levy on China — if countries are found supplying weapons to Iran, effectively pairing military pressure with trade measures (indiatoday.in).
The United States began blocking ships entering and leaving Iranian ports at 10 a.m. Eastern on Monday, widening the war after talks collapsed. (centcom.mil) United States Central Command said the order covers “all maritime traffic” to and from Iranian ports and coastal areas, including ports on the Arabian Gulf, the Gulf of Oman and the Caspian Sea. Central Command said ships moving only between non-Iranian ports would still be allowed through the Strait of Hormuz. (centcom.mil) Oil traders reacted before the blockade took effect. Reuters reported Brent crude rose more than 7% above $100 a barrel in Singapore trading on April 13 after United States-Iran talks ended without a deal. (usnews.com) The waterway at the center of the move is the Strait of Hormuz, the narrow shipping lane between Iran and Oman that carries a large share of the world’s seaborne oil. A blockade aimed at Iranian ports raises the risk of delays, insurance shocks and military miscalculation in the same channel used by Gulf energy exporters. (britannica.com; centcom.mil) The blockade follows six weeks of open United States military operations inside Iran. The Pentagon said Operation Epic Fury began at 1:15 a.m. on February 28, 2026, and by mid-March had struck more than 7,000 targets while damaging or destroying more than 100 Iranian vessels. (media.defense.gov) The White House had framed that campaign as pressure to force Tehran into a deal over its nuclear program. A White House fact sheet on February 6 said President Donald Trump had restored “maximum pressure” on Iran after returning to office. (whitehouse.gov) Washington paired the naval move with a trade threat. Trump said on April 9 that any country supplying military weapons to Iran would face an immediate 50% tariff on all goods sent to the United States, with “no exclusions or exemptions,” according to Reuters. (usnews.com) That warning appears aimed in part at China. The White House already has China-specific tariff authorities on the books from 2025 trade orders, while news outlets including CNBC and the Telegraph reported Trump said the Iran weapons warning would apply to Beijing if evidence emerged. (whitehouse.gov; cnbc.com; telegraph.co.uk) Iran rejected the move. Coverage of the announcement quoted Iran’s navy chief calling the blockade “ridiculous” and “laughable,” while Tehran has previously condemned United States sanctions and military action as unlawful coercion. (msn.com; state.gov) The next test is whether the blockade stays limited to ships serving Iranian ports or triggers clashes at sea. For now, Washington has put warships, oil markets and trade policy on the same pressure track. (centcom.mil; usnews.com; usnews.com)
