Washington / Tehran, April 5, 2026: As the US-Iran war entered its 37th day on Sunday, US President Donald Trump dramatically escalated pressure on Tehran by issuing a fresh 48-hour ultimatum demanding that Iran either open the Strait of Hormuz or make a deal — or face the worst military onslaught yet. The deadline, which falls on the evening of April 6, 2026, has sent shockwaves across global capitals and energy markets, as the strategic waterway remains partially blocked, choking global oil and LPG supplies and pushing crude prices to multi-year highs.

In a fiery post on his Truth Social platform on Saturday, Trump wrote: “Remember when I gave Iran ten days to MAKE A DEAL or OPEN UP THE HORMUZ STRAIT. Time is running out — 48 hours before all Hell will reign down on them.” The ultimatum comes after weeks of back-and-forth between Washington and Tehran, including multiple deadline extensions and what Trump has described as “very productive” diplomatic conversations that Iran has simultaneously dismissed as one-sided and unfair.

The April 6 Deadline: What Trump Has Threatened

Trump’s ultimatum is rooted in a threat he first made on March 21, when he warned Iran that if it did not reopen the Strait of Hormuz and agree to a peace framework by a set deadline, the United States would destroy Iran’s major power plants and energy infrastructure. On March 26, he extended this deadline by 10 days — to April 6, 2026, 8 p.m. Eastern Time — citing what he said was a request from the Iranian government and ongoing diplomatic conversations.

Now, with the April 6 deadline just hours away, Trump has escalated his language yet again, warning of consequences that go beyond the energy infrastructure strikes he had previously threatened. Military analysts and regional observers are watching the situation with extreme anxiety, particularly given that Iran has shown no signs of capitulation and has in fact been retaliating aggressively against US and Israeli forces throughout the conflict.

Iran’s Response: Flat Rejection and Counter-Threats

Iran’s military establishment has responded to Trump’s latest ultimatum with defiance and counter-threats. General Ali Abdollahi Aliabadi, head of Iran’s central military command, described Trump’s warning as “a helpless, nervous, unbalanced and stupid action.” Tehran has made clear that it has no intention of yielding to American pressure, characterising Trump’s repeated ultimatums as psychological warfare designed to mask US military difficulties on the ground.

In a particularly alarming statement on April 5, Iran’s military command vowed to open what it described as the “gates of hell” if US attacks on Iran escalate beyond current levels. Specifically, Iranian commanders warned that they would strike all infrastructure used by US forces across the region, including bases in Saudi Arabia, Qatar, and other Gulf states, as well as all of Israel’s critical infrastructure, if Washington escalates its air campaign.

US Losses on Day 37: F-15 Rescue, C-130 Downing

Day 37 of the US-Iran war brought dramatic developments on both sides. The United States confirmed that it had successfully rescued a missing F-15E weapons system officer whose fighter jet was shot down over Iran earlier in the conflict. The rescue was carried out by Navy SEAL Team 6 in a large-scale operation involving hundreds of special operations personnel. President Trump announced the rescue on social media, calling the officer “SAFE and SOUND.”

However, Iran claimed to have shot down a US C-130 transport aircraft and destroyed several other “flying objects” during the same rescue operation, with Iranian officials saying that the US used an abandoned airport in Isfahan as part of the extraction mission. The competing claims have been difficult to verify independently, but they underscore the intensity and danger of the ongoing military confrontation.

Impact on the Strait of Hormuz and Global Energy Markets

The Strait of Hormuz, through which roughly 20 percent of the world’s traded oil and a significant share of global LPG flows, remains a flashpoint. Iran has used its position to selectively restrict shipping through the waterway, creating severe supply disruptions that have driven up energy prices globally. Crude oil prices have been trading at elevated levels throughout the conflict, with Brent crude hitting multi-year highs and India’s crude import bill surging as a result.

For India, the Strait of Hormuz crisis has had very direct and painful consequences. The country relies on the waterway for a significant portion of its crude oil and LPG imports. Seventeen Indian ships remain stranded on the western side of the Strait, including LPG tankers, and the government has been working hard to arrange safe passage for its vessels. India has so far managed to get seven LPG tankers through the Strait since the war began, with the seventh — Green Sanvi — completing its transit on the night of April 3-4, 2026.

Global Protests Against the War

The ongoing US-Israel war on Iran has triggered massive protests globally. In Iraq, thousands rallied in Baghdad against what protesters described as a “senseless” war, with demonstrators chanting against both the United States and Israel. Protests have also been reported in Pakistan, Turkey, Jordan, and across North Africa and Southeast Asia, reflecting widespread anger in the Muslim world over the military campaign against Iran.

In Europe, there have been growing calls for a ceasefire from France, Germany, and the UK, though Western governments have largely maintained a public posture of support for the US position on Iran’s nuclear programme. The United Nations has warned that the conflict risks causing a humanitarian catastrophe in Iran and a generational energy crisis that could push millions of people in developing nations into poverty.

What India Is Watching: Energy Security and Diplomatic Balance

India is watching the April 6 deadline with acute anxiety. The country’s energy security, the safety of its ships and crew in the Persian Gulf, and the welfare of millions of Indian workers in the Gulf region are all directly at stake. New Delhi has maintained its carefully calibrated position of non-alignment in the conflict, engaging with both Washington and Tehran through diplomatic channels while working through international shipping associations to secure safe passage for its vessels.

As the April 6 deadline approaches, the world holds its breath. The next 24 to 48 hours could determine whether the US-Iran conflict enters a catastrophic new phase, or whether diplomatic channels — however strained — manage to pull both sides back from the brink of a far more destructive escalation that could reshape the Middle East and the global economy for decades to come.