Following the collapse of US-Iran negotiations, the US Military announced on Monday that it will block all maritime traffic entering or exiting ports in Iran, in way imposing an economic blockade by preventing the operation of crude and gas laden tankers, which are Iran’s major revenue source.The US Central Command (CENTCOM), in post on social media platform X, said, “Forces will begin implementing a blockade of all maritime traffic entering and exiting Iranian ports on April 13 at 10 am ET, in accordance with the President’s proclamation.”In the Indian context, the blockade comes into force around 7:30 pm on Monday.CENTCOM said the blockade will be enforced impartially against vessels of all nations entering or departing Iranian ports and coastal areas, including all ports on the Persian Gulf and the Gulf of Oman. However, it clarified that CENTCOM forces will not impede freedom of navigation for vessels transiting the Strait of Hormuz to and from non-Iranian ports.It means the US will be facilitating maritime trade at other countries like Saudi Arabia, Bahrain, Qatar, UAE, Kuwait and Iraq.CENTCOM has advised mariners that additional information will be provided through a formal notice prior to the start of the blockade. “All mariners are advised to monitor Notice to Mariners broadcasts and contact US naval forces when operating in the Gulf of Oman and Strait of Hormuz approaches,” the statement said.The US military has also asked mariners to contact through ‘Channel 16’, the open communication mode at sea between ships.