The American blockade has banned 89 ships, the military says

In an update on social media, the US military command for the Middle East said the effort was “halting the flow of trade inside and outside Iranian ports”.

Hormuz Strait is one of Iran's main hot spots now.

Even with the fighting interrupted, Tehran and Washington have clashed on waterways.

The storm plays a vital role in the global economy, providing the flow of liquid oil and natural gas.

But Iran closed it earlier in combat and commissioned ships to cross transit.