President Donald Trump on Sunday vowed to impose an immediate naval blockade on the Strait of Hormuz, sharply escalating tensions after marathon peace talks between the United States and Iran failed to produce a breakthrough.
The move threatens to derail a fragile two-week ceasefire and intensify a conflict that has already shaken global energy markets and raised fears of a wider regional war.
In a series of posts on Truth Social, Trump said the US Navy would begin “blockading any and all ships” attempting to enter or exit the strait, a vital artery through which roughly 20 per cent of global oil and liquefied natural gas supplies pass.
He further warned that US forces would interdict vessels suspected of paying transit fees to Iran and would actively clear sea mines allegedly deployed by Tehran.
“Any Iranian who fires at us, or at peaceful vessels, will be blown to hell,” Trump wrote, underscoring the increasingly confrontational tone from Washington.
Trump’s threat marks a sharp escalation at a time when diplomatic efforts are already faltering. With deep mistrust, unresolved disputes and ongoing regional violence, prospects for a durable peace remain uncertain. The coming days will be critical in determining whether the situation moves towards de-escalation or a broader and more dangerous confrontation.
Diplomatic breakdown
The collapse of the latest round of talks, held in Islamabad, prompted both sides to blame each other for the failure to end six weeks of fighting that has killed thousands and disrupted the global economy.
US Vice President JD Vance, who led the American delegation, said Iran had refused to accept key US conditions, particularly demands related to its nuclear programme.
“Iran is unwilling to give up its nuclear ambitions,” Trump later reiterated.
Iranian Parliament Speaker Mohammad Baqer Qalibaf, who co-led Tehran’s delegation alongside Foreign Minister Abbas Araqchi, said Washington had failed to build trust despite what he described as “forward-looking initiatives”.
Iranian media reported that while progress had been made on several issues, major disagreements persisted over control of the Strait of Hormuz and Tehran’s nuclear activities.
Regional diplomacy intensifies
Following the breakdown in talks, Iranian President Masoud Pezeshkian held discussions with Russian President Vladimir Putin to review regional developments and the status of the ceasefire.
Meanwhile, Pakistan, which hosted the negotiations, urged both sides to preserve the ceasefire. Foreign Minister Ishaq Dar described maintaining the truce as “imperative”.
European officials also stressed the need for diplomacy. EU foreign affairs spokesman Anouar El Anouni called negotiations “essential”, while British Prime Minister Keir Starmer and Oman’s Sultan Haitham bin Tariq emphasised the need to avoid further escalation.
Strategic and economic stakes
The Strait of Hormuz remains central to the crisis. Iran has demanded recognition of its authority over the waterway, along with war reparations, the release of frozen assets abroad and a broader regional ceasefire, including in Lebanon.
Despite heightened tensions, some oil shipments have resumed, with a handful of tankers successfully transiting the strait. However, hundreds remain stranded in the Gulf, awaiting safe passage.
The disruption has already fuelled inflation and slowed global economic growth, with analysts warning of prolonged instability even if shipping lanes reopen.
Violence continues
While diplomatic efforts falter, violence persists across the region. In southern Lebanon, continued Israeli airstrikes targeting Hezbollah have caused heavy civilian casualties.
One particularly tragic incident involved an airstrike in the village of Srifa that killed an infant during her father’s funeral, underscoring the human cost of the conflict.
Israeli officials have maintained that operations against Hezbollah are separate from the US-Iran ceasefire framework.
Mounting war costs
The financial toll of the conflict is also mounting. Israel estimates that its war-related expenditure has reached about $11.5 billion, with a significant portion allocated to defence spending.
