Will Iran's attack on a ship in Hormuz sink Trump's fragile peace deal?

The tentative peace arrangement between the United States and Iran is facing its first major challenge after a commercial cargo vessel came under attack in the Strait of Hormuz, barely a week after both countries agreed to a 60-day Memorandum of Understanding (MoU) designed to halt months of hostilities and reopen one of the world's busiest energy corridors.

What happened to the Ever Lovely?

The latest crisis began at approximately 2:10 pm UTC on June 25, when the Ever Lovely, a Singapore-registered container ship operated by Taiwan-based Evergreen, was sailing through the Strait of Hormuz.

According to the United Kingdom Maritime Trade Operations (UKMTO), the vessel reported being struck on its starboard side while transiting near the Omani coast. Initial assessments by British maritime authorities and US naval officials suggested the vessel was hit either by an unguided projectile or by what security officials described as a suspected loitering drone.

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Two US officials later told Reuters that Iran had fired on the vessel.

The explosion caused visible structural damage around the ship's bridge, but the impact did not disable the vessel.

The ship's master confirmed that all crew members escaped unharmed, no fuel leakage or environmental contamination occurred and propulsion systems remained operational, allowing the vessel to continue its voyage into the Gulf of Oman.

The attack reportedly occurred around 7.5 nautical miles southeast of Oman's Port of Dahit. The location lies within Omani territorial waters and forms part of what has become known as the "southern corridor" — a route established to allow commercial shipping to avoid areas considered more hazardous following months of conflict.

Although the vessel was sailing through the broader evacuation zone, the IMO later clarified that Ever Lovely itself was not participating in its voluntary evacuation programme.

What has Iran said about control of the Strait of Hormuz?

Only hours before the vessel reported being hit, Iran's recently established Persian Gulf Strait Authority issued fresh instructions declaring that commercial vessels should travel only through routes approved by Tehran.

The authority warned, "Consequences arising from passage through unauthorised routes shall be the responsibility of the owner, operator, and vessel commander."

Separately, the Islamic Revolutionary Guard Corps (IRGC) Navy announced that safe transit would only be guaranteed for vessels using Iranian-designated shipping lanes. Ships failing to comply, the Revolutionary Guards said, could face enforcement measures.

The maritime environment in the Strait is now being shaped by two parallel systems. One is backed by Oman and coordinated by the International Maritime Organization. Under this arrangement, ships are offered voluntary evacuation routes through Omani territorial waters to bypass heavily mined or high-risk areas within the central Strait.

The programme was launched only days before the Ever Lovely incident as part of broader efforts to help vessels and crews stranded since the conflict erupted in late February.

The second framework is controlled by Iran through the Persian Gulf Strait Authority and the IRGC Navy. Tehran requires commercial vessels to follow an Iranian traffic separation scheme and obtain electronic authorisation before entering designated shipping lanes. Iranian officials have also indicated that vessels choosing alternative routes should not expect security guarantees.

Those tensions became visible almost immediately after the latest Iranian warnings. British maritime security company Ambrey reported that two Panama-flagged vessels were instructed by Revolutionary Guard forces to alter their course.

Separately, three commercial tankers — the UAE-owned Blue Star 1, Japan's Azumasan and the Omega Trader — were reported to have abandoned their intended passage after receiving hostile radio communications from Iranian patrol boats.

How did the United Nations respond to the latest attack?

The reported strike forced the International Maritime Organization to reassess the safety of its own evacuation operation.

The organisation had only recently begun implementing a voluntary programme aimed at helping hundreds of ships and thousands of seafarers who had remained trapped inside the Gulf since fighting intensified months earlier.

Following the Ever Lovely incident, however, the IMO halted the operation.

IMO Secretary-General Arsenio Dominguez explained the decision in a statement. "It decided 'to temporarily pause its implementation in order to reconfirm that the necessary safety guarantees continue to be in place for the ships on our evacuation list and all those in the region.'"

The suspension immediately interrupted efforts to assist hundreds of commercial vessels and thousands of crew members that had been waiting for months to exit the Gulf safely.

What does the June 17 peace agreement actually provide?

The June 17 Memorandum of Understanding was never intended to serve as a comprehensive peace treaty. Rather, it established a temporary 60-day framework during which both sides would refrain from major military action while negotiators attempted to resolve the more difficult political, military and economic disputes that remain outstanding.

Under the arrangement, the United States committed itself to easing aspects of its naval blockade, facilitating the release of frozen Iranian assets and developing a framework for reconstruction funding estimated at at least $300 billion.

Iran, in return, agreed that commercial shipping would continue using the Strait of Hormuz without tolls during the 60-day negotiation period while discussions continued over the future administration of the waterway.

Negotiators were expected to address Iran's nuclear programme, inspection mechanisms, sanctions relief, financial incentives, long-term governance of the Strait of Hormuz and Israel's simultaneous military campaign in Lebanon.

Conflicting interpretations of the agreement also emerged almost immediately after it was announced.

Iran's chief negotiator, Mohammad Baqer Qalibaf, rejected the US assertion that unfrozen Iranian assets would be used to purchase American agricultural products, describing that interpretation as false.

Earlier, Qalibaf had also characterised the initial agreement as "America's declaration of defeat," reflecting the confidence among some factions within Tehran that the ceasefire had strengthened Iran's negotiating position.

Can diplomacy prevent the latest crisis from escalating further?

While the strike on the Ever Lovely has significantly heightened tensions, neither the United States nor Iran has indicated that it intends to walk away from the June 17 Memorandum of Understanding.

Instead, both governments have continued to rely on diplomatic and military communication channels established under the interim arrangement, suggesting that efforts to contain the fallout remain underway.

One of the most significant developments since the ceasefire was the establishment of a direct deconfliction mechanism between Washington and Tehran.

On June 25, US Vice President JD Vance confirmed that representatives of Iran's Islamic Revolutionary Guard Corps (IRGC) and the US Central Command (CENTCOM) had been linked through a dedicated communication channel based in Doha, Qatar.

The mechanism was created to reduce the possibility of military misunderstandings at a time when naval forces from multiple countries continue to operate in close proximity in and around the Strait of Hormuz.

The channel is intended to provide an immediate line of communication if incidents occur at sea, allowing commanders on both sides to exchange information before events spiral into direct military confrontation.

How has Washington responded to the attack?

Even before the Ever Lovely incident, senior US officials had repeatedly warned that freedom of navigation through the Strait of Hormuz remained one of Washington's principal concerns.

During a visit to Gulf states aimed at reassuring regional partners about the interim agreement, US Secretary of State Marco Rubio said any Iranian attempt to interfere with international shipping would be unacceptable.

Before reports emerged that the cargo vessel had been struck, Rubio told reporters that "then we're going to have a problem."

He also warned separately during a Gulf Cooperation Council summit in Manama, Bahrain, that any move by Iran to establish permanent tolls or impose long-term control over commercial navigation would create "total chaos."

US President Donald Trump had earlier issued an even stronger warning regarding the future of the agreement.

Speaking about the June 17 understanding, Trump said, "It's a memorandum of understanding. And if I don't like it, we'll go back to shooting at them, dropping bombs on their head. If I don't like it, if they don't behave, we'll go right back to dropping bombs right smack in the middle of their head."

How have oil markets and shipping reacted?

On Thursday, benchmark crude prices climbed by more than two per cent after news of the strike emerged and the International Maritime Organization announced the temporary suspension of its evacuation programme.

Brent crude briefly rose above $75 per barrel, reaching approximately $75.26, as traders assessed the possibility of renewed disruption to one of the world's most important energy transit routes.

The Strait of Hormuz handled around one-fifth of global oil and liquefied natural gas supplies before the conflict began in late February, making any disruption to shipping a matter of international concern.

However, market sentiment shifted considerably within a day. On Friday, both major oil benchmarks fell by almost two per cent as immediate supply concerns eased.

Brent crude futures declined $1.47, or 1.95 per cent, to $73.79 a barrel, while U.S. West Texas Intermediate dropped $1.44, or 2 per cent, to $70.48.

Both contracts were on course to register weekly losses of around eight per cent. The decline reflected growing confidence that oil exports were gradually recovering despite the latest security incident.

Shipping data showed crude exports through the Strait had risen to their highest levels since fighting began in February.

Earlier, US Energy Secretary Chris Wright said that shipments through the waterway were approaching volumes seen before U.S. and Israeli military operations against Iran began on February 28.

According to Wright, at least 20 million barrels of oil had exited the Strait during the previous 24 hours. Nevertheless, overall shipping activity remains significantly below normal levels.

Although exports have increased steadily since the ceasefire reopened the waterway, total vessel traffic continues to represent only a fraction of the roughly 125 ships that passed through the Strait each day before the conflict erupted.

South Korea's Oceans Ministry also announced that eight more South Korean vessels had successfully exited the Strait.

Saudi Arabia also resumed important export operations. Shipping data from LSEG showed that Saudi Aramco restarted crude loading at its Ras Tanura terminal after a suspension lasting almost four months.

Two Very Large Crude Carriers (VLCCs), each capable of transporting around two million barrels of oil, were seen loading cargo while another tanker waited nearby.

Outside West Asia, separate supply risks also emerged. Earthquakes that struck Venezuela on Thursday briefly added to market uncertainty.

Preliminary assessments suggested that the country's major oilfields, pipelines, refineries and export terminals had suffered only limited damage because most infrastructure lies away from the worst-affected areas.

However, widespread electricity disruptions created uncertainty over whether Venezuela would be able to maintain production at approximately 1.2 million barrels per day.

With inputs from agencies