UPDATE: US military seizes Iranian-flagged cargo ship
Ariel Schalit
A man takes cover as air raid sirens sound, warning of rockets launched from Lebanon toward Israel, in Kiryat Shmona, northern Israel, Monday, March 23, 2026. (AP Photo/Ariel Schalit)
Ariel Schalit
A man takes cover as air raid sirens sound, warning of rockets launched from Lebanon toward Israel, in Kiryat Shmona, northern Israel, Monday, March 23, 2026. (AP Photo/Ariel Schalit)
UPDATE: US military seizes Iranian-flagged cargo ship
Ohad Zwigenberg
Israeli security forces and rescue team respond at the site of an Iranian missile strike in Tel Aviv, Israel, Tuesday, March 24, 2026. (AP Photo/Ohad Zwigenberg)
Ohad Zwigenberg
Israeli security forces and rescue team respond at the site of an Iranian missile strike in Tel Aviv, Israel, Tuesday, March 24, 2026. (AP Photo/Ohad Zwigenberg)
UPDATE: US military seizes Iranian-flagged cargo ship
Hadi Mizban
Relatives grieve in Baghdad, Iraq, Tuesday, March 24, 2026, during a funeral of members of the Popular Mobilization Forces who were killed in a U.S. airstrike in Anbar, Iraq. (AP Photo/Hadi Mizban)
Hadi Mizban
Relatives grieve in Baghdad, Iraq, Tuesday, March 24, 2026, during a funeral of members of the Popular Mobilization Forces who were killed in a U.S. airstrike in Anbar, Iraq. (AP Photo/Hadi Mizban)
UPDATE: US military seizes Iranian-flagged cargo ship
Majdi Mohammed
Israeli soldiers secure the site where an Iranian missile wreckage landed in the West Bank village of Kifl Haris Tuesday, March 24, 2026. (AP Photo/Majdi Mohammed)
Majdi Mohammed
Israeli soldiers secure the site where an Iranian missile wreckage landed in the West Bank village of Kifl Haris Tuesday, March 24, 2026. (AP Photo/Majdi Mohammed)
UPDATE: US military seizes Iranian-flagged cargo ship
Ohad Zwigenberg
Israeli security forces and rescue teams work at the site struck by an Iranian missile in Arad, southern Israel, Sunday, March 22, 2026. (AP Photo/Ohad Zwigenberg)
Ohad Zwigenberg
Israeli security forces and rescue teams work at the site struck by an Iranian missile in Arad, southern Israel, Sunday, March 22, 2026. (AP Photo/Ohad Zwigenberg)
UPDATE: US military seizes Iranian-flagged cargo ship
Ariel Schalit
Israeli security forces survey the site that was struck by an Iranian missile in Dimona, southern Israel, Sunday, March 22, 2026. (AP Photo/Ariel Schalit)
Ariel Schalit
Israeli security forces survey the site that was struck by an Iranian missile in Dimona, southern Israel, Sunday, March 22, 2026. (AP Photo/Ariel Schalit)
UPDATE: US military seizes Iranian-flagged cargo ship
Mohammad Zaatari
Smoke and flames rise from an Israeli airstrike that hit the Qasmiyeh Bridge near the coastal city of Tyre, Lebanon, Sunday, March 22, 2026. (AP Photo/Mohammad Zaatari)
Mohammad Zaatari
Smoke and flames rise from an Israeli airstrike that hit the Qasmiyeh Bridge near the coastal city of Tyre, Lebanon, Sunday, March 22, 2026. (AP Photo/Mohammad Zaatari)
UPDATE: US military seizes Iranian-flagged cargo ship
Vahid Salemi
Rescue workers and first responders work at a residential building hit in an earlier U.S.-Israeli strike in Tehran, Iran, Monday, March 23, 2026. (AP Photo/Vahid Salemi)
Vahid Salemi
Rescue workers and first responders work at a residential building hit in an earlier U.S.-Israeli strike in Tehran, Iran, Monday, March 23, 2026. (AP Photo/Vahid Salemi)
UPDATE: US military seizes Iranian-flagged cargo ship
Ohad Zwigenberg
Children play beside a fragment of an Iranian ballistic missile that landed in a schoolyard in the Israeli settlement of Peduel in the West Bank Monday, March 23, 2026. (AP Photo/Ohad Zwigenberg)
Ohad Zwigenberg
Children play beside a fragment of an Iranian ballistic missile that landed in a schoolyard in the Israeli settlement of Peduel in the West Bank Monday, March 23, 2026. (AP Photo/Ohad Zwigenberg)
UPDATE: US military seizes Iranian-flagged cargo ship
Vahid Salemi
People follow a truck carrying the flag draped coffins of Gen. Ali Mohammad Naeini, a spokesperson for Iran’s paramilitary Revolutionary Guard and one of his comrades Amir Hossein Bidi , during their funeral procession in Tehran, Iran, Saturday, March 21, 2026. (AP Photo/Vahid Salemi)
Vahid Salemi
People follow a truck carrying the flag draped coffins of Gen. Ali Mohammad Naeini, a spokesperson for Iran’s paramilitary Revolutionary Guard and one of his comrades Amir Hossein Bidi , during their funeral procession in Tehran, Iran, Saturday, March 21, 2026. (AP Photo/Vahid Salemi)
UPDATE: US military seizes Iranian-flagged cargo ship
Vahid Salemi
Iranian worshippers perform Eid al-Fitr prayers marking the end of the holy fasting month of Ramadan as one of them wears an Iranian flag at the Imam Khomeini Grand Mosque in Tehran, Iran, Saturday, March 21, 2026. (AP Photo/Vahid Salemi)
Vahid Salemi
Iranian worshippers perform Eid al-Fitr prayers marking the end of the holy fasting month of Ramadan as one of them wears an Iranian flag at the Imam Khomeini Grand Mosque in Tehran, Iran, Saturday, March 21, 2026. (AP Photo/Vahid Salemi)
UPDATE: US military seizes Iranian-flagged cargo ship
Hussein Malla
A displaced woman who fled Israeli airstrikes in southern Lebanon, carries her belonging as she moves to a better spot to shelter from the rain, past an Arabic anti-war poster that reads, "Sacrificing for whom? Lebanon does not need war," in Beirut, Saturday, March 21, 2026.(AP Photo/Hussein Malla)
Hussein Malla
A displaced woman who fled Israeli airstrikes in southern Lebanon, carries her belonging as she moves to a better spot to shelter from the rain, past an Arabic anti-war poster that reads, "Sacrificing for whom? Lebanon does not need war," in Beirut, Saturday, March 21, 2026.(AP Photo/Hussein Malla)
UPDATE: US military seizes Iranian-flagged cargo ship
Leo Correa
Iranian Kurdish Mariam crosses the Haji Omeran border crossing on foot between Iran and the autonomous Kurdistan Region of Iraq (KRI), Iraq, Sunday, March 15, 2026, as the border remains open. (AP Photo/Leo Correa)
Leo Correa
Iranian Kurdish Mariam crosses the Haji Omeran border crossing on foot between Iran and the autonomous Kurdistan Region of Iraq (KRI), Iraq, Sunday, March 15, 2026, as the border remains open. (AP Photo/Leo Correa)
UPDATE: US military seizes Iranian-flagged cargo ship
Vahid Salemi
A man cleans debris from his apartment damaged when a nearby police station was hit Friday in a U.S.-Israeli strike in Tehran, Iran, Sunday, March 15, 2026. (AP Photo/Vahid Salemi)
Vahid Salemi
A man cleans debris from his apartment damaged when a nearby police station was hit Friday in a U.S.-Israeli strike in Tehran, Iran, Sunday, March 15, 2026. (AP Photo/Vahid Salemi)
UPDATE: US military seizes Iranian-flagged cargo ship
Vahid Salemi
The shattered structure of a police station is seen after it was hit Friday in a U.S.-Israeli strike in Tehran, Iran, Sunday, March 15, 2026. (AP Photo/Vahid Salemi)
Vahid Salemi
The shattered structure of a police station is seen after it was hit Friday in a U.S.-Israeli strike in Tehran, Iran, Sunday, March 15, 2026. (AP Photo/Vahid Salemi)
UPDATE: US military seizes Iranian-flagged cargo ship
STR
A FlyDubai plane is parked at Dubai International Airport as smoke rises in the background after a drone struck a fuel tank early morning, forcing the temporary suspension of flights, in Dubai, United Arab Emirates, Monday, March 16, 2026. (AP Photo)
STR
A FlyDubai plane is parked at Dubai International Airport as smoke rises in the background after a drone struck a fuel tank early morning, forcing the temporary suspension of flights, in Dubai, United Arab Emirates, Monday, March 16, 2026. (AP Photo)
UPDATE: US military seizes Iranian-flagged cargo ship
Leo Correa
A member of the armed wing of the Kurdish-Iranian opposition group Organization of Iranian Kurdistan Struggle, known as Khabat, stands in front of a shrapnel pockmarked wall that allegedly was damaged in strike by Iranian-backed militias in Iraq last week at a military base on the outskirts of Irbil, Iraq, Monday, March 16, 2026. (AP Photo/Leo Correa)
Leo Correa
A member of the armed wing of the Kurdish-Iranian opposition group Organization of Iranian Kurdistan Struggle, known as Khabat, stands in front of a shrapnel pockmarked wall that allegedly was damaged in strike by Iranian-backed militias in Iraq last week at a military base on the outskirts of Irbil, Iraq, Monday, March 16, 2026. (AP Photo/Leo Correa)
UPDATE: US military seizes Iranian-flagged cargo ship
Mahmoud Illean
Israeli security forces inspect a house in east Jerusalem where a fragment of an Iranian missile crashed onto the rooftop, Monday, March 16, 2026. (AP Photo/Mahmoud Illean)
Mahmoud Illean
Israeli security forces inspect a house in east Jerusalem where a fragment of an Iranian missile crashed onto the rooftop, Monday, March 16, 2026. (AP Photo/Mahmoud Illean)
UPDATE: US military seizes Iranian-flagged cargo ship
Ariel Schalit
Israeli soldiers operate next to their mobile artillery unit on the border with Lebanon in northern Israel, Monday, March 16, 2026. (AP Photo/Ariel Schalit)
Ariel Schalit
Israeli soldiers operate next to their mobile artillery unit on the border with Lebanon in northern Israel, Monday, March 16, 2026. (AP Photo/Ariel Schalit)
UPDATE: US military seizes Iranian-flagged cargo ship
Ariel Schalit
Nofar Eliash holds her dog as she takes shelter with others while air raid sirens warn of incoming Iranian and Hezbollah missile strikes in Kiryat Shmona, northern Israel, Monday, March 16, 2026. (AP Photo/Ariel Schalit)
Ariel Schalit
Nofar Eliash holds her dog as she takes shelter with others while air raid sirens warn of incoming Iranian and Hezbollah missile strikes in Kiryat Shmona, northern Israel, Monday, March 16, 2026. (AP Photo/Ariel Schalit)
UPDATE: US military seizes Iranian-flagged cargo ship
Hassan Ammar
A man runs past a bulldozer clearing debris from a building damaged in an Israeli airstrike in Dahiyeh, Beirut's southern suburbs, Lebanon, Tuesday, March 17, 2026. (AP Photo/Hassan Ammar)
Hassan Ammar
A man runs past a bulldozer clearing debris from a building damaged in an Israeli airstrike in Dahiyeh, Beirut's southern suburbs, Lebanon, Tuesday, March 17, 2026. (AP Photo/Hassan Ammar)
UPDATE: US military seizes Iranian-flagged cargo ship
Ariel Schalit
Residents inspect a house damaged yesterday by a projectiles launched from Lebanon in Nahariya, northern Israel, Tuesday, March 17, 2026. (AP Photo/Ariel Schalit)
Ariel Schalit
Residents inspect a house damaged yesterday by a projectiles launched from Lebanon in Nahariya, northern Israel, Tuesday, March 17, 2026. (AP Photo/Ariel Schalit)
UPDATE: US military seizes Iranian-flagged cargo ship
Ohad Zwigenberg
Israeli air defense system fires to intercept missiles during an Iranian attack over Tel Aviv, Israel, early Sunday, March 15, 2026. (AP Photo/Ohad Zwigenberg)
Ohad Zwigenberg
Israeli air defense system fires to intercept missiles during an Iranian attack over Tel Aviv, Israel, early Sunday, March 15, 2026. (AP Photo/Ohad Zwigenberg)
UPDATE: US military seizes Iranian-flagged cargo ship
Vahid Salemi
Volunteers clean debris from a residential building damaged when a nearby police station was hit Friday in a U.S.-Israeli strike in Tehran, Iran, Sunday, March 15, 2026. (AP Photo/Vahid Salemi)
Vahid Salemi
Volunteers clean debris from a residential building damaged when a nearby police station was hit Friday in a U.S.-Israeli strike in Tehran, Iran, Sunday, March 15, 2026. (AP Photo/Vahid Salemi)
UPDATE: US military seizes Iranian-flagged cargo ship
Hassan Ammar
People walk past tents sheltering people displaced by Israeli airstrikes at a public space along the Beirut waterfront at sunset in Beirut, Lebanon, Sunday, March 15, 2026. (AP Photo/Hassan Ammar)
Hassan Ammar
People walk past tents sheltering people displaced by Israeli airstrikes at a public space along the Beirut waterfront at sunset in Beirut, Lebanon, Sunday, March 15, 2026. (AP Photo/Hassan Ammar)
UPDATE: US military seizes Iranian-flagged cargo ship
STR
Fire and plumes of smoke rise after a drone struck a fuel tank forcing the temporary suspension of flights. near Dubai International Airport, in United Arab Emirates, early Monday, March 16, 2026. (AP Photo)
STR
Fire and plumes of smoke rise after a drone struck a fuel tank forcing the temporary suspension of flights. near Dubai International Airport, in United Arab Emirates, early Monday, March 16, 2026. (AP Photo)
UPDATE: US military seizes Iranian-flagged cargo ship
Akhtar Soomro, Reuters
Police officers stand at a security checkpoint Sunday as Pakistan prepared to host the U.S. and Iran for a possible second phase of peace talks in Islamabad, Pakistan.
Akhtar Soomro, Reuters
Police officers stand at a security checkpoint Sunday as Pakistan prepared to host the U.S. and Iran for a possible second phase of peace talks in Islamabad, Pakistan.
UPDATE: US military seizes Iranian-flagged cargo ship
Akhtar Soomro, Reuters
A police officer gestures to a vehicle at a checkpoint Sunday near Faisal Masjid, as Pakistan prepared to host the U.S. and Iran for a possible second phase of peace talks in Islamabad, Pakistan.
Akhtar Soomro, Reuters
A police officer gestures to a vehicle at a checkpoint Sunday near Faisal Masjid, as Pakistan prepared to host the U.S. and Iran for a possible second phase of peace talks in Islamabad, Pakistan.
UPDATE: US military seizes Iranian-flagged cargo ship
Akhtar Soomro, Reuters
A police officer checks a man's identification at a security checkpoint Sunday as Pakistan prepared to host the U.S. and Iran for a possible second phase of peace talks in Islamabad, Pakistan.
Akhtar Soomro, Reuters
A police officer checks a man's identification at a security checkpoint Sunday as Pakistan prepared to host the U.S. and Iran for a possible second phase of peace talks in Islamabad, Pakistan.
WASHINGTON — The United States said Sunday it seized an Iranian cargo ship that tried to run its blockade and Iran said it would retaliate, raising the possibility that the ceasefire between the two countries might not last for even the two days it is set to remain in force.
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 U.S. hoped to kick off before the ceasefire expires on Tuesday.
A weeks-long blockade of shipping that drove global oil prices higher likewise might remain in place.
The United States maintained a blockade of Iranian ports, while Iran 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 U.S. military said Sunday it fired on an Iranian-flagged cargo ship as the vessel sailed toward Iran’s Bandar Abbas port. “We have full custody of their ship, and are seeing what’s on board!” President Donald Trump wrote on social media.
Iran’s military said the ship was traveling 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 U.S. military,” a military spokesperson said, according to state media.
Iranian state media also reported that Tehran 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 warned Iran that the United States would destroy every bridge and power plant in Iran if Tehran rejected his terms, continuing a pattern of such threats throughout the war.
Iran said that if the United States were to attack its civilian infrastructure, it would hit power stations and desalination plants of Gulf Arab neighbors.
Brent crude futures jumped about 7% to $96.85 a barrel and S&P 500 futures fell about 0.9% in early Asian trading, as investors dealt with conflicting messages about the war.
Trump said his envoys would arrive in Islamabad on Monday evening, one day before a two-week ceasefire ends.
A White House official said the U.S. 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 U.S. C-17 cargo planes landed at an air base Sunday afternoon, carrying security equipment and vehicles in preparation for the U.S. delegation’s arrival, two Pakistani security sources said.
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.
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 U.S.-Israeli strikes on Iran and in an Israeli invasion of Lebanon conducted in parallel since the war began on February 28. Iran responded to the attacks with missiles and drones against its Arab neighbors that host U.S. bases.
Iran’s parliament speaker, Mohammad Baqer Qalibaf, who 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 criticized 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.
Iran’s semi‑official Tasnim news agency reported that two liquefied petroleum gas tankers that attempted to transit the strait were turned back by Iran’s armed forces on Saturday. One of the tankers, the Angola‑flagged LPG tanker G Summer, later exited the Gulf on a second attempt, according to MarineTraffic vessel tracking data.