The reported move has not yet taken effect because ship owners must be notified 24 hours in advance, Axios said.
Trump said the United States is reinstating the Iranian blockade, marking a potential escalation in pressure tied to maritime trade and sanctions enforcement. The measure had not yet come into effect at the time of the report because of a legal requirement to notify ship owners 24 hours in advance, Axios said. If implemented, a blockade would affect shipping activity by restricting maritime access and would likely be watched for its impact on regional trade, oil flows and broader geopolitical risk.