Tehran has accused Washington of breaking international law by infringing upon its maritime commerce

The US has expanded its blockade of the Strait of Hormuz, telling its military to pursue Iran-linked vessels everywhere around the globe, the chairman of the Joint Chiefs of Staff, Dan Caine, has said.

Washington announced it would stop ships from accessing Iranian ports on Monday after talks with Tehran's representatives in Pakistan failed. Iran shut theStrait of Hormuzfor the Americans and their allies following the US-Israeli attack on the country on February 28. The US blockade of the key waterway, accounting for some 20% of international crude and LNG trade, further increased the strain on the global economy, causing oil and gas prices to skyrocket.

US forces outside the Persian Gulf area will also "actively pursue any Iranian-flagged vessel or any vessel attempting to provide material support to Iran," Caine told journalists on Friday.

The chairman of the Joint Chiefs of Staff singled out operations in the Pacific, saying that the US would be going after vessels that left Iran's ports before the blockade started, according to AP.

On Thursday, the US Navy said in an advisory that all vessels with links to Tehran, "regardless of location, are subject to visit, board, search and seizure."

It provided a list of contraband items to be confiscated, which included weapons, ammunition, nuclear materials, oil products, iron, steel, and aluminum.

According to the US Central Command, a total of 14 ships heading to the Strait of Hormuz have turned around since the announcement of the blockade. None of the vessels have so far been boarded.

Bloomberg reported on Friday that Pakistani tanker Shalamar became the first ship to exit the Strait of Hormuz with a cargo of crude oil since Monday.

On Thursday, Iranian UN envoy Amir-Saeid Iravani labeled the US blockade "a clear act of aggression," accusing Washington of breaking international law by infringing upon rightful maritime commerce.

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The same day, Mohsen Rezaei, a military adviser to Iran's supreme leader, warned that Tehran is ready to target the US Navy to lift the blockade. "Our launchers are now locked on the warships, and we will sink them all," he said.

(RT.com)