The U.S. Central Command resumed a maritime blockade of all Iranian ports and coastal waters on Tuesday [1, 2].
This escalation represents a significant shift in the naval strategy to isolate Iran financially and physically during an active military campaign. By restricting maritime traffic, the U.S. aims to degrade Iran's ability to fund its operations and secure the Strait of Hormuz for international shipping.
The blockade began on the fourth day [1] of U.S. airstrikes against Iran. While reports on the exact start time vary between 3 p.m. and 4 p.m. Eastern Time [3, 4], the operation was announced at 5 a.m. local Korean time [1].
President Donald Trump reversed a previous policy that would have levied a toll on ships transiting the Strait of Hormuz [1, 3]. The toll plan lasted only one day before the administration opted for a full blockade instead.
U.S. military assets in the region have surged to support the operation. More than 20 U.S. Navy warships and hundreds of military aircraft are currently conducting operations across the Middle East [2].
A U.S. Central Command spokesperson said the military "resumed the maritime blockade of ships traveling to and from Iranian ports and coastal areas" [2]. The spokesperson said the move is intended to "continue to weaken Iran's ability to attack merchant ships in the Strait of Hormuz" [2].
The operation targets all Iranian maritime gateways to ensure that the Iranian government cannot utilize the strategic waterway to disrupt global trade, or launch further attacks on commercial vessels [1, 2].
“The blockade began on the fourth day of U.S. airstrikes against Iran.”
The transition from a proposed transit toll to a full maritime blockade indicates a move toward total economic and strategic isolation of Iran. By deploying a massive fleet of warships and aircraft, the U.S. is attempting to establish absolute naval dominance in the Strait of Hormuz, which is a critical chokepoint for global oil supplies. This strategy prioritizes the neutralization of Iranian naval capabilities over the collection of transit fees, signaling a high-intensity conflict phase.
