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Teheran vows to retaliate after US seizes first Iranian ship in blockade

Iran also said it would not participate in a second round of negotiations

Published Mon, Apr 20, 2026 · 06:34 AM — Updated Mon, Apr 20, 2026 · 02:02 PM
    • A view of the Iranian-flagged cargo ship Touska. The US said it had fired on the Touska as the vessel sailed toward Iran’s Bandar Abbas port.
    • A view of the Iranian-flagged cargo ship Touska. The US said it had fired on the Touska as the vessel sailed toward Iran’s Bandar Abbas port. PHOTO: REUTERS

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    [WASHINGTON/ISLAMABAD] Concerns grew on Monday (Apr 20) that the ceasefire between the US and Iran might not hold after the US said it had seized an Iranian cargo ship that tried to run its blockade and Iran vowed to retaliate.

    Efforts to build a more lasting peace in the region likewise appeared to be on shaky ground, as Iran said it would not participate in a second round of negotiations that the US had hoped to kick off before the ceasefire expires on Tuesday.

    The US has maintained a blockade of Iranian ports, while Iran has lifted and then reimposed its own blockade on marine traffic passing through the Strait of Hormuz, which typically handles roughly one-fifth of the world’s oil supply.

    The US military said it fired on an Iranian-flagged cargo ship headed towards Iran’s Bandar Abbas port on Sunday after a six-hour standoff, disabling its engines. US marines then rappelled from helicopters onto the vessel, US Central Command said.

    “We have full custody of their ship, and are seeing what’s on board!” President Trump wrote on social media.

    A US marine rappels onto the Iranian-flagged cargo ship Touska during the US operation on Apr 19 to board and seize the cargo ship. PHOTO: REUTERS

    Iran’s military said the ship, identified as the Touska, had been travelling from China. “We warn that the armed forces of the Islamic Republic of Iran will soon respond and retaliate against this armed piracy by the US military,” a military spokesperson said, according to state media.

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    Oil prices jumped more than 5 per cent and stock markets wobbled as traders fretted that the ceasefire would collapse and traffic in and out of the Gulf would remain at a bare minimum.

    Iran rejects peace talks

    Iranian state media also reported that Teheran had rejected new peace talks, citing the ongoing blockade, threatening rhetoric, and Washington’s shifting positions and “excessive demands.”

    “One cannot restrict Iran’s oil exports while expecting free security for others. The choice is clear: either a free oil market for all, or the risk of significant costs for everyone,” Iran’s First Vice-President Mohammadreza Aref wrote on social media.

    Trump had earlier warned Iran that the US would destroy every bridge and power plant in Iran if Teheran rejected his terms, continuing a pattern of such threats throughout the war.

    Iran has said that if the US were to attack its civilian infrastructure it would hit power stations and desalination plants of Gulf Arab neighbours.

    Preparing for talks that might not happen

    Trump said his envoys would arrive in Islamabad on Monday evening, one day before a two-week ceasefire ends.

    A White House official had said the US delegation would be headed by Vice-President JD Vance, who led the war’s first peace talks a week ago, and also include Trump’s envoy Steve Witkoff and son-in-law Jared Kushner. Trump had separately told ABC News and MS Now that Vance would not go.

    Pakistan, which has served as the main mediator, appeared to be preparing for the talks. Two giant US C-17 cargo planes landed at an air base on Sunday afternoon, carrying security equipment and vehicles in preparation for the US delegation’s arrival, two Pakistani security sources said.

    Police conduct checks on vehicles in Islamabad on Apr 19, as Pakistan prepares to host the US and Iran for the second phase of peace talks. PHOTO: REUTERS

    Municipal authorities in the capital city of Islamabad halted public transport and heavy-goods traffic through the city. Barbed wire was rolled out near the Serena Hotel, where last week’s talks were held. The hotel told all guests to leave.

    The apparent diplomatic setback could set the stage for a renewed surge in oil prices when markets reopen after the weekend.

    Iran’s parliament speaker, Mohammad Baqer Qalibaf, who has led Iran’s side in the talks, had earlier said the two sides had made progress but were still far apart on nuclear issues and the Strait.

    European allies, repeatedly criticised by Trump for not aiding his war effort, worry that Washington’s negotiating team is pushing for a swift, superficial deal that would require months or years of technically complex follow-on talks.

    Now in its eighth week, the war has created the most severe shock to global energy supplies in history, sending oil prices surging because of the de facto closure of the strait.

    Thousands of people have been killed by US-Israeli strikes on Iran and in an Israeli invasion of Lebanon conducted in parallel since the war began on Feb 28. Iran responded to the attacks with missiles and drones against Israeli and nearby Arab countries that host US bases.

    The Islamic Republic executed two men convicted of cooperating with Israel’s Mossad intelligence service and planning attacks inside the country, the judiciary’s news outlet Mizan reported on Sunday. REUTERS

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