US Rejects Iranian Proposal to Reopen Strait of Hormuz, Prompting 'Doomsday War' Threat

The decision to keep the world's most critical energy chokepoint closed now rests on a diplomatic impasse in New York, where the US administration has formally rejected an Iranian offer to reopen the Strait of Hormuz for seven days. By dismissing the proposal as a tactical delay rather than a genuine concession, Washington has shifted the immediate trajectory of the standoff from a negotiated de-escalation back to military deterrence.[2][5]

The rejection triggered an immediate escalation in rhetoric from Tehran. Iranian Foreign Minister Abbas Araghchi warned on September 28 that the collapse of the initiative could lead to a "doomsday war" in the Persian Gulf. Despite the severe language, Araghchi noted that the Iranian government remains open to further diplomacy if the US alters its negotiating posture.[1][4]

The core of the dispute centers on the sequencing of concessions. Iran's proposal offered a seven-day reopening of the strait, which facilitates the transit of approximately 21 million barrels of oil per day, in exchange for immediate sanctions relief and a halt to US military deployments in the region.[3][5]

US officials concluded the terms were designed to fracture allied unity rather than resolve the underlying conflict. Speaking on September 27, US Ambassador to the United Nations Michael Waltz stated that Iran was not negotiating "in good faith" to end the war. Waltz argued the seven-day window would merely allow Tehran to resupply its coastal missile batteries while forcing European allies to pressure Washington for a permanent ceasefire.[2]

President Donald Trump reinforced the rejection by warning of possible new military strikes against Iranian infrastructure if commercial shipping remains blocked. The administration's calculus relies on maintaining maximum economic pressure, calculating that Tehran's domestic economy cannot sustain a prolonged mobilization of its naval and missile forces along the southern coast.[4][5]

The continued closure places immediate strain on European and Asian energy markets. The Global Accord Institute notes that the rejection turns Europe's anticipated energy relief into a test of coercive diplomacy, as winter approaches and Brent crude prices remain highly volatile. European capitals had privately urged Washington to accept the seven-day pause to allow stranded tankers to exit the Persian Gulf.[5]

Regional mediators are struggling to bridge the gap. Qatari and Omani diplomats, who facilitated the initial transmission of the Iranian proposal, have warned that the window for a negotiated settlement is closing. Al Jazeera reports that the two sides are moving further from a deal, with both militaries increasing their readiness levels along the strategic waterway.[3]

The next critical juncture depends on whether Iran acts on its "doomsday" threat or extends a revised offer. US Central Command has repositioned additional naval assets to the Gulf of Oman, preparing for potential asymmetric attacks by Iranian fast-attack craft or uncrewed surface vessels if the blockade escalates into active kinetic engagements.[1][3]