Updated April 20, 2026 at 2:02 PM EDT
A U.S. negotiating team is expected to head to Pakistan for a second round of peace talks with Iran — which says it might not even show up.
Tehran's reticence comes after the U.S. on Sunday fired on and seized an Iranian cargo ship in the Strait of Hormuz as part of a U.S. naval blockade on vessels accessing Iran's ports in the vital waterway.
A video released by U.S. Central Command (CENTCOM) shows the seizure of the Iranian ship, with Marines descending from a helicopter by rope to board the vessel, the Touska, after "guided-missile destroyer USS Spruance (DDG 111) disabled Touska's propulsion," according to a statement with the video.
President Trump said Sunday the U.S. military had "stopped them right in their tracks by blowing a hole in the engine room" after the ship failed to heed repeated warnings.
Trump said Marines then took control of the vessel and moved to investigate its cargo. He said the Iranian flagged ship was under the existing U.S. Treasury Department sanctions.
Iran's Revolutionary Guard warned it will take action against the U.S. military for the seizure of that ship, without elaborating.
This all comes as the expiration looms this week on a temporary ceasefire between the U.S. and Iran.
Here's more news from the Middle East war on Monday:
Talks or no talks?
Preparations to host Iranian and U.S. negotiating teams were underway in Pakistan's capital, Islamabad, on Monday, despite questions over whether Iran would attend.
Iranian Foreign Ministry spokesman Esmail Baghaei said Monday Tehran had no plans yet regarding a second round of talks, accusing the U.S. of lacking "seriousness in pursuing a diplomatic process," according to Iran's state news agency, IRNA.
Trump announced Sunday that a negotiating team was headed to Islamabad on Monday evening and warned Iran against walking away from negotiations.
"We're offering a very fair and reasonable DEAL, and I hope they take it because, if they don't, the United States is going to knock out every single Power Plant, and every single Bridge, in Iran. NO MORE MR. NICE GUY!" Trump wrote on social media.
The U.S. delegation led by Vice President Vance, along with U.S. envoy Steve Witkoff and Jared Kushner, President Trump's son-in-law, plans to travel to Islamabad soon, according to an official familiar with the plans speaking on background because they are not authorized to speak on the record.
Trump has brushed off Iran's comments that it won't come to the table in Pakistan. "We're supposed to have the talks," Trump told The New York Post. "So I would assume at this point nobody's playing games."
He said he himself is willing to meet senior Iranian leaders if there's a breakthrough.
Islamabad is ready to host. The city's traffic police said in a video announcement that several routes into Islamabad have been blocked and the high-security Red Zone, which houses government buildings and embassies, has now been completely sealed.
Even several hiking trails in the lush Margalla Hills on the city's edge were closed on Monday.
Pakistan's government has given no formal indication about the status of its ongoing mediation efforts.
The first round of peace talks just over a week ago in Islamabad, with Vice President Vance leading the U.S. delegation, concluded without an agreement. Vance accused Iran of being unwilling to accept Washington's terms on Iran's plans for nuclear enrichment.
Death toll in Iran
At least 3,375 people have been killed in Iran since the U.S. and Israel launched attacks on the country seven weeks ago, Iranian officials said Monday.
Abbas Masjedi, the head of Iran's Legal Medicine Organization, didn't give separate figures for civilian and security force casualties.
He said 383 of the dead were children under 18 years old, according to Iran's Mizan news agency.
Lebanon ceasefire holding
The temporary ceasefire to pause the fighting between Israel and Iran-backed Lebanese militia Hezbollah in Lebanon is holding, though shakily.
In the south, where the Israeli military is still occupying a large swath of land, Israel has carried out a number of airstrikes against what it called "terrorist activity."
The ceasefire agreement between Israel and Lebanon says Israel can continue military activity in self-defense, according to a text shared by the U.S. State Department.
Hezbollah claimed responsibility for an explosion that killed at least one Israeli soldier over the weekend and said the explosive device was planted before the ceasefire.
The tenuous truce took effect midnight Friday local time, following direct talks last week between Israel and Lebanon in Washington.
The State Department said in a statement to NPR the U.S. will host a second round of talks between the Israeli and Lebanese ambassadors on Thursday.
Jane Arraf in Amman, Jordan, Aya Batrawy in Dubai, United Arab Emirates, Betsy Joles in Islamabad, and Kate Bartlett in Johannesburg contributed to this report.
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