US-Iran Talks Stall After Ship Seizure, 1 Ceasefire Deadline Looms

A second round of US-Iran peace talks in Pakistan is in jeopardy after Tehran has yet to commit to attending, threatening a return to open conflict as a two-week ceasefire expires Wednesday. The uncertainty, compounded by the US seizure of an Iranian cargo ship on Sunday, has kept global energy markets on edge, with Brent crude holding near $95 a barrel, up more than 30 percent since the war began on Feb. 28.

“This version of the Islamic Republic will retaliate, either by striking at a U.S. ship or closing the Strait of Ada, which would have a dramatic effect on energy prices,” Trita Parsi, co-founder and executive vice president of the Quincy Institute for Responsible Statecraft, told Barron’s.

The standoff has effectively frozen traffic through the Strait of Hormuz, a chokepoint for a fifth of the world’s oil supply. The disruption has left hundreds of vessels and thousands of seafarers stranded, prompting the International Energy Agency to call it the largest supply disruption on record. The economic fallout has pushed President Trump to consider a currency swap with the United Arab Emirates to help the key ally secure US dollars.

At stake is a potential return to broader conflict if the two sides cannot find a path to de-escalate. Key sticking points remain Iran’s nuclear program, the lifting of US sanctions, and a verifiable agreement on safe passage for commercial ships through the Strait of Hormuz. Without a deal, Trump has warned he is prepared to resume attacks, stating he expects to be “bombing.”

A Ceasefire Under Duress

The diplomatic process was thrown into chaos after the US Navy fired on and seized an Iranian-flagged cargo vessel, the M/V Touska, in the Arabian Sea on Sunday. US Central Command said the ship had attempted to violate the naval blockade of Iranian ports. Tehran condemned the action as “armed piracy” and vowed retaliation.

The incident undermined a fragile truce and a subsequent, confusing series of events. On Friday, Iran’s foreign minister announced the Strait of Hormuz would be “completely open,” a statement President Trump immediately welcomed. However, by Saturday, Iran reversed course, and shipping data showed traffic remained at a near-standstill, with only three vessels passing in a 24-hour period, a fraction of the pre-war daily average of 140.

Complicating matters, President Trump on Tuesday announced an extension of the ceasefire at the request of Pakistani mediators, but insisted the naval blockade would remain. Iranian officials dismissed the extension, with an advisor to Iran's parliament speaker stating, "the losing side cannot dictate terms."

Hormuz Remains the Flashpoint

The conflict has underscored the strategic vulnerability of the Strait of Hormuz. While Iran briefly allowed some ships to pass along a designated northern route, its subsequent closure and attacks on vessels have made insurers unwilling to cover voyages, effectively halting most traffic. According to shipbroker BRS, 61 non-Iran-related supertankers, 50 of them laden with cargo, are trapped inside the Gulf.

Analysts suggest a potential deal would require the US to unfreeze billions in Iranian assets held in countries like Oman or Qatar in exchange for the strait’s reopening. A durable agreement could involve a framework where regional powers, including Iran, collectively manage the waterway.

For now, the diplomatic path remains murky. US Vice President JD Vance’s planned trip to Islamabad for the talks has been called off pending a clear response from Tehran. With the clock ticking toward Wednesday’s deadline, the risk of a rapid escalation back into open conflict is growing.

This article is for informational purposes only and does not constitute investment advice.