The military command said the restrictions are aimed at controlling maritime activity linked to Iran, while maintaining passage for vessels not associated with Iranian ports.
US naval assets have been deployed to monitor and control access to Iranian ports, with the aim of restricting Tehran’s oil export routes, a key source of revenue, as part of broader economic pressure during the ongoing conflict.
The decision follows the collapse of recent diplomatic efforts between Washington and Tehran in Pakistan, prompting the US to consider maritime pressure as a strategic option. Reports cited by Trump suggested the US Navy could "out-blockade" Iran, with aircraft carriers deployed in the Persian Gulf bolstering enforcement capability.
Iran responded with a strong warning. The Islamic Revolutionary Guard Corps said any escalation would be met with force in the strategic waterway. It warned that "any miscalculated move will trap the enemy in the deadly whirlpools in the Strait."
Reasserting its position, Iran said its forces have the Strait of Hormuz "under full control," signalling defiance amid the increased US naval presence. The development has raised concerns about further escalation, with potential implications for global trade routes, oil supply chains and energy markets.
Key takeaways:
US enforces complete maritime blockade on Iranian ports
CENTCOM says blockade applies to vessels of all nationalities
Passage through Strait of Hormuz allowed for non-Iran-linked ships
Move follows breakdown of US-Iran talks in Pakistan
Trump-backed strategy includes increased naval presence in Gulf
Iran’s IRGC warns of retaliation, calls any move “deadly”
Tehran claims full control over Strait of Hormuz
Escalation raises concerns over global trade and oil supply disruptions