US Central Command say more than 10,000 armed forces members, as well as warships and planes, are involved in blockade.

Iran responded with threats on ports in the Persian Gulf and the Gulf of Oman.

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The Islamic Revolutionary Guard Corps said it would treat the approach of military vessels to the strait as a violation of the ceasefire

The U.S. military said it will begin stopping all ships from leaving or entering Iran's ports in line with a blockade ordered by President Donald Trump.

Trump says Beijing ‘would like to see this ended’ as the US moves to stop vessels transiting to and from Iranian ports.

Updated marine traffic map of Iran shows shops near blocked Strait of Hormuz. Latest escalation may impact gas prices. Iran declares blockade 'piracy'

CENTCOM has warned that blockade would apply to all ships regardless of flag

Analysts say that Iran has already moved vast quantities of its oil offshore and a full blockade would be complex to implement

The US blockade of ships using Iranian ports has come into force but several Iran-linked tankers have passed through the strait of Hormuz since it began. Lucy Hough speaks to the…

CENTCOM contradicts reports on ships breaking blockade as Trump says US-Iran talks could resume in the next two days.

Six merchant vessels complied with direction from US forces to turn around to re-enter an Iranian port on the Gulf of Oman

The White House has been signaling a diplomatic solution to the conflict in the Middle East, as discussions around continuing negotiations with Tehran are underway.

US Central Command say more than 10,000 armed forces members, as well as warships and planes, are involved in blockade.

The U.S. military's maritime blockade of Iran has "completely halted" sea-based trade with the Middle Eastern country, U.S. Central Command said.

Analysts say that Iran has already moved vast quantities of its oil offshore and a full blockade would be complex to implement

A naval blockade can be carried out by surface ships at sea and planes by air.

The U.S. has signaled optimism about the prospect of reaching a diplomatic end to the Iran war.

Gen. Dan Caine told the press Thursday that 13 ships have turned away from the U.S. blockade on the Strait of Hormuz since it began on Monday.

At least four vessels tracked from Iranian ports appear to have crossed a US blockade line in the Gulf of Oman, analysis of ship-tracking data suggests.