Donald Trump said on Sunday that U.S. forces would start blockading maritime traffic to Iranian ports, escalating tensions after negotiations failed to produce an agreement to end the conflict, putting a fragile two-week ceasefire at risk.

US Central Command said the blockade would take effect at 10 a.m. ET (1400 GMT) and would apply to all vessels entering or leaving Iranian ports across the Arabian Gulf and the Gulf of Oman. It added that freedom of navigation through Hormuz to non-Iranian destinations would not be impeded.

Shipping data showed several vessels adjusting routes in response. The Malta-flagged very large crude carrier Agios Fanourios I reversed course after attempting to enter the Gulf and is now anchored near the Gulf of Oman.

Other tankers, including the Pakistan-flagged Shalamar and Khairpur, continued operations, heading toward the United Arab Emirates and Kuwait respectively to load cargo.

The Liberia-flagged VLCC Mombasa B also transited the strait earlier on Sunday and is currently ballasting in the Gulf, according to vessel tracking data.Iran’s Islamic Revolutionary Guard Corps warned that any military vessels approaching the strait would be considered a violation of the ceasefire and would face a “decisive” response.

Despite rising tensions, shipping data showed that three fully laden supertankers passed through the strait on Saturday, appearing to be among the first vessels to exit the Gulf since the ceasefire agreement was reached last week.

Araqchi said negotiations in Islamabad had been conducted in good faith but were undermined by what he described as “maximalism” and shifting U.S. demands, adding that the talks came close to producing an agreement before breaking down.

The remarks followed an announcement by Donald Trump that U.S. naval forces would begin blockading vessels entering or leaving Iranian ports, a move that risks destabilizing a fragile ceasefire reached after weeks of conflict.

US Central Command said the blockade would take effect at 10 a.m. ET (1400 GMT) and would apply to all maritime traffic linked to Iranian ports across the Arabian Gulf and Gulf of Oman, while maintaining freedom of navigation through the Strait of Hormuz for vessels not bound for Iran.

Trump said the United States would act against ships paying what he described as “illegal tolls” to Iran and warned that any attack on U.S. or commercial vessels would trigger a strong military response.

Iran’s Islamic Revolutionary Guard Corps said any approach by foreign military vessels to the strait would be treated as a violation of the ceasefire and met with a “decisive” response.

Parliamentary Speaker Mohammad Baqer Qalibaf dismissed the U.S. position, saying Tehran would respond in kind. “If you fight, we will fight, and if you come forward with logic, we will deal with logic,” he said, according to state media.

The talks in Islamabad marked the first direct engagement between the United States and Iran in more than a decade and followed a ceasefire announced earlier in the week after six weeks of conflict that has disrupted global energy markets and pushed oil prices above $100 per barrel.

JD Vance, who led the U.S. delegation, said no agreement had been reached, while signaling that diplomacy could continue. Trump also described the talks as “very friendly” and expressed confidence that Iran might return to negotiations.

A U.S. official said key sticking points included demands for Iran to halt uranium enrichment, dismantle enrichment facilities, transfer highly enriched material and end support for regional groups, alongside ensuring open access to the strait.

Iranian officials, including President Masoud Pezeshkian, said Tehran remained open to a “balanced and fair agreement,” blaming Washington for the breakdown and urging a return to international legal frameworks.

Shipping data showed that three fully laden supertankers transited the strait on Saturday, suggesting that maritime flows had not yet been fully disrupted despite the looming blockade.

In a post on social media, Trump said U.S. naval forces would block “any and all ships” attempting to enter or leave the waterway, which carries roughly 20% of global oil supplies and is central to international energy markets.

He added that the Navy had been instructed to “seek and interdict every vessel in international waters” that had paid a toll to Iran, describing such payments as illegal and warning that affected ships would not be granted safe passage.

The announcement came shortly after U.S. officials ended negotiations with Iran in Pakistan without reaching an agreement, prompting Washington to escalate efforts to curtail Tehran’s economic leverage derived from control over the strategic shipping lane.

Trump said Iran’s nuclear ambitions remained a key obstacle to resolving the conflict and signaled readiness for further military action. “At an appropriate moment, we are fully ‘locked and loaded,’” he wrote, adding that U.S. forces would “finish” the remaining aspects of the war.

The Strait of Hormuz is a critical chokepoint for global energy supplies, and any disruption to shipping through the narrow passage has the potential to impact oil prices and international trade flows.

No immediate response from Iranian authorities was reported.

Iran’s Revolutionary Guards said ships should avoid the main navigation zone and instead follow designated entry and exit paths to reduce the risk of collision with naval mines.

“All ships intending to transit the Strait of Hormuz are hereby notified they should take alternative routes for traffic,” the statement said, emphasizing maritime safety concerns.

The announcement follows Tehran’s agreement to temporarily reopen the strategic strait as part of a two-week truce reached with Washington. The ceasefire was agreed late Tuesday, shortly before a deadline set by U.S. President Donald Trump for Iran to comply with demands related to the reopening of the passage.

The Strait of Hormuz is a critical global energy corridor, through which roughly one-fifth of the world’s oil supply typically passes.

Iran had effectively restricted traffic through the route since early March, contributing to a surge in global energy prices and heightening concerns over supply disruptions.

The designation of alternative routes signals continued operational risks in the waterway despite the ceasefire, underlining the fragile security environment and the potential for further disruption to global shipping and energy markets.

Qalibaf described the threats as “reckless” in a social media post, saying Washington would gain nothing through escalation and urging respect for Iran’s rights. Iran’s mission to the United Nations said the warnings amounted to “a direct and public incitement to terrorize civilians,” calling on the international community to intervene.

The statements came as Iran has effectively halted cargo traffic through the Strait of Hormuz during the conflict, a critical chokepoint for global oil and gas shipments. The disruption has contributed to rising energy prices and heightened volatility in international markets.

Russia also criticized Washington’s stance, urging a return to negotiations. The Russian foreign ministry, citing a call between Foreign Minister Sergei Lavrov and his Iranian counterpart, said the United States should abandon “the language of ultimatums.”

Iranian officials signaled the crisis could widen beyond the Gulf. Ali Akbar Velayati, an adviser to Iran’s supreme leader, warned that allied groups could target the Bab el-Mandeb Strait at the southern entrance to the Red Sea, a route that typically handles around 12 percent of global trade.

Iran leads a network of allied groups across the region, including in Lebanon, Iraq and Yemen, where Houthi forces have previously attacked shipping lanes.Tehran has also introduced conditions for reopening the Strait of Hormuz.

Presidential spokesperson Seyyed Mohammad Mehdi Tabatabaei said transit could resume only if a portion of revenues is allocated to compensate Iran for war-related damages.Trump has said the United States would strike Iranian power plants and bridges if the strait is not reopened, setting a deadline that further escalated tensions.

In remarks reported over the weekend, he reiterated the threat of military action if maritime traffic remains blocked.Iran’s culture minister Sayed Reza Salihi-Amiri dismissed the warnings, describing Trump as inconsistent and saying Iranian society does not take his statements seriously.

The standoff underscores the strategic importance of maritime chokepoints in the Middle East and the potential for disruption to ripple through global energy markets and trade networks.

The vote, initially expected on Saturday, will now take place sometime next week, according to two diplomats who spoke on condition of anonymity due to the private nature of council discussions.

Bahrain, which holds the rotating presidency of the United Nations Security Council this month, had significantly watered down the resolution in an effort to secure consensus among the council’s 15 members.

The revised draft authorizes defensive measures to ensure safe passage of commercial vessels through the strait, stopping short of the offensive military action initially backed by Gulf states and the United States.

The delay underscores continued divisions within the council, with Russia and China still unwilling to support the modified proposal, diplomats said.

The Strait of Hormuz, through which roughly one-fifth of global oil supply typically flows, has become a focal point of international concern amid escalating conflict in the region, raising fears over energy security and global trade disruptions.

Bahrain has been seeking unanimous backing for the resolution, but the postponement highlights the challenges of achieving agreement among major powers on how to respond to the the crisis.

The vessel, Pine Gas, carrying 45,000 metric tons of LPG, took nearly three weeks to leave the Gulf after loading at Ruwais on February 27, a day before hostilities escalated following U.S. and Israeli strikes on Iran.

Chief Officer Sohan Lal said the crew of 27 Indian nationals witnessed daily missile and drone activity while awaiting clearance. The ship was eventually instructed by Iran’s Islamic Revolutionary Guard Corps to transit through a narrow channel north of Larak Island, instead of standard shipping lanes.

The alternative route was advised due to concerns that the main Hormuz passage had been mined, Lal said. Clearance to proceed was granted only after all crew members consented to the voyage.

Indian authorities coordinated closely with the vessel’s owner, Seven Islands Shipping, before approving the transit. The Indian Navy guided the tanker through the strait and deployed four warships to escort it for nearly 20 hours from the Gulf of Oman into the Arabian Sea.

Officials said no transit fees were paid and Iranian forces did not board the vessel during its passage.Supply concerns and reroutingIndia, heavily reliant on imported LPG for household consumption, has been monitoring shipping risks closely.

The cargo, initially destined for Mangalore, was redirected to ports on the east coast, including Visakhapatnam and Haldia, to manage supply distribution.

New Delhi said six Indian vessels have successfully transited the strait, while 18 ships with about 485 Indian crew remain in the Persian Gulf.

Iran has stated it is permitting passage for vessels from “friendly nations,” including India, as maritime traffic through Hormuz remains restricted.

Speaking on a Fuji TV programme, Motegi said such a move would be contingent on a “complete ceasefire” and the presence of naval mines obstructing navigation. He described the scenario as hypothetical, adding that minesweeping could be considered if maritime protection conditions required it.

Japan’s ability to deploy forces overseas is restricted by its postwar pacifist constitution, though security legislation enacted in 2015 allows the use of the Self-Defense Forces if an attack on a close partner threatens Japan’s survival and no alternative measures are available.

Motegi said Tokyo has no immediate plans to negotiate specific arrangements for stranded Japanese vessels to transit the waterway, stressing instead the importance of restoring conditions that allow safe passage for all ships.

Japan relies on the Strait of Hormuz for roughly 90% of its oil imports, underscoring the strategic importance of the route. The strait has been largely closed by Iran during the ongoing conflict, now in its fourth week, contributing to a surge in global oil prices.

The disruption has prompted Japan and other countries to release oil from strategic reserves to stabilise supply.

Iranian Foreign Minister Abbas Araqchi said on Friday he had discussed with Motegi the possibility of allowing Japanese-linked vessels to pass through the strait, according to Japan’s Kyodo news agency.

Meanwhile, U.S. President Donald Trump met Japanese Prime Minister Sanae Takaichi in Washington on Thursday and urged Japan to increase its role in efforts to reopen the waterway. Takaichi said she briefed Trump on the scope of support Japan could provide under its legal framework.

Ali Mousavi, Iran’s representative to the United Nations’ maritime agency, made the remarks in an interview published on Friday by China’s Xinhua news agency, prior to U.S. President Donald Trump’s warning that Iranian power infrastructure could be targeted if the strategic waterway was not kept “fully open” within 48 hours.

Mousavi, who also serves as Iran’s ambassador to the United Kingdom, said ships not associated with Iran’s adversaries would be permitted to transit the strait, provided they coordinate security and safety arrangements with Tehran.

He added that Iran would continue working with the International Maritime Organization to ensure maritime safety and the protection of seafarers in the Gulf region.The Strait of Hormuz, a narrow passage between Iran and Oman, handles roughly one-fifth of global oil and liquefied natural gas shipments, making it one of the world’s most critical energy chokepoints.

Concerns over potential Iranian attacks during the ongoing U.S.-Israeli military campaign have already deterred many vessels from using the route, raising the risk of disruptions to global energy supplies.

Mousavi said diplomacy remained Tehran’s priority but emphasized that a “complete cessation of aggression” and the restoration of mutual trust were essential. He attributed the current situation in the strait to what he described as Israeli and U.S. attacks against Iran.

Trump’s earlier warning has heightened fears of further escalation in the region, with shipping security and energy market stability closely tied to developments in the waterway.

The long-running legal confrontation between global commodities trader Trafigura and businessman Prateek Gupta is entering its final stretch, with both parties delivering closing arguments in London as the court prepares to assess one of the most complex commercial disputes in recent years.

The case, centred on allegations of a large-scale metals fraud involving substitute cargoes and unusual trading patterns, has drawn international attention due to its financial scale and the broader implications for global metals markets.

Trafigura maintains that none of its employees were aware of or involved in any manipulation throughout the period in question.

The company has consistently argued that it only became aware of irregularities when cargo inspections revealed discrepancies in late 2022, prompting immediate action and a series of internal reviews.

Gupta, who has testified remotely, has argued in contrast that longstanding trading practices and communications between his team and Trafigura staff suggest deeper involvement from individuals within the organisation.

His legal team has pointed to messages, emails and internal exchanges that, in their view, indicate a coordinated effort to sustain uncommercial trades and delay inspections.

The defence presented by Gupta aims to demonstrate that trading behaviour, timing of shipments and financing arrangements collectively formed a network of actions designed to support the disputed transactions.

They contend that the structure of these dealings would not have been possible without significant operational knowledge from multiple parties, emphasising the need for shared responsibility.

Trafigura rejects these claims, stating that its internal processes were circumvented through deliberate deception and misrepresentation conducted externally.

Its lawyers described Gupta’s explanations as inconsistent and lacking evidence, arguing that the case files present no substantive indication that Trafigura’s traders knowingly participated in any wrongdoing.

The company has also highlighted that two former staff members named in the proceedings have provided sworn affidavits denying involvement, strengthening Trafigura’s position that any irregularities unfolded beyond its immediate awareness.

These statements have formed a central part of Trafigura’s argument that operational transparency remains a core principle of its global trading activities.

The proceedings further examined the role of financing structures and shipment timelines, particularly claims that route extensions were used to prolong credit windows and reduce inspection frequency.

Gupta’s team has suggested that such decisions were collaborative, while Trafigura has insisted that any manipulation of routes was orchestrated without its consent.

The dispute has taken place across multiple jurisdictions, emphasizing the complexity of cross-border commodity trading and the need for rigorous oversight mechanisms.

Both sides have presented thousands of pages of evidence, reflecting how global supply chains and financial arrangements can intersect in ways that require close regulatory attention.

As the trial concludes, industry observers note that the outcome will resonate far beyond the courtroom because of its implications for corporate governance and market integrity.

The case highlights the value of strong compliance systems, transparent documentation and meticulous verification procedures in highly interconnected trading sectors.

Regardless of the judgment, the situation demonstrates how international companies and individual traders must operate within strict ethical and operational frameworks to avoid exposure to legal and financial vulnerabilities.

It also underscores the importance of maintaining trust among investors, lenders and global commodity partners who rely on accurate cargo information and verifiable trading practices.

The court’s decision, expected soon, will bring clarity to a dispute that has drawn extensive attention from financial institutions, commodity analysts and legal experts.

Its conclusion marks a crucial moment for all parties involved and may influence future standards for due diligence in global commodity trade.