The assessment contrasts with remarks by US President Donald Trump, who said on social media that “Iran, with the help of the USA, has removed, or is removing, all sea mines.”
The Pentagon declined to comment publicly, while US Central Command also withheld details.
Iran has denied laying mines, with Deputy Foreign Minister Majid Takht-Ravanchi rejecting the allegations.
Ongoing disruptions, including intermittent attacks and closures, have already affected shipping and raised concerns in global energy markets.
Richard Nephew of Columbia University warned that the situation could deter maritime traffic, the Post report said.
“You’re not going to have many people wanting to run that risk,” he said, adding that even partial disruption could have significant consequences.
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