The United States has implemented a blockade targeting vessels utilizing Iranian ports, yet numerous tankers associated with Iran have successfully navigated through the Strait of Hormuz since the enforcement began. This blockade aims to exert economic pressure on Iran, a nation whose financial stability heavily relies on the export of oil and gas. The decision follows the conclusion of recent diplomatic discussions between Washington and Tehran, which ended without reaching an agreement. Lucy Hough engages with Patrick Wintour, the Guardian’s diplomatic editor, for further insights.