Strait of Hormuz Crisis: Iran Denies US Hotline, Ceasefire Collapses After Drone Strike on Ship

The Strait of Hormuz, through which roughly one-fifth of the world's oil passes, is at the center of a rapidly deteriorating security situation. A fragile ceasefire reached in mid-June 2026 between the US and Iran is unravelling after a series of attacks and retaliations. Here is a fact-checked summary of the latest developments as of June 28–29, 2026, drawing from multiple official and news sources.

Iran Denies Direct US Military Hotline

The Islamic Revolutionary Guard Corps (IRGC) has categorically denied US claims that a direct military hotline was established between Tehran and Washington for de-escalation in the Strait of Hormuz. IRGC spokesman Brigadier General Hossein Mohebi called the reports a "sheer lie" and a "pure lie" . The US had proposed the hotline to ease tensions after months of conflict. Separately, an Iranian security source acknowledged that a communication line exists but described it as political, not military — and stressed it does not change transit rules .

Iran's Warning: Bypass Approved Routes and 'Will Be Dealt With'

On June 25, 2026, the IRGC Navy issued a forceful statement declaring that safe passage through the Strait is only possible via routes officially designated by Iran, and that vessels using unauthorized routes "will be dealt with" . Iran's top diplomat reiterated on June 28 that any attempt by shipping to bypass Iran's preferred route would "increase tensions" . This comes as Iran objects to a new Omani-facilitated alternative route created without Tehran's approval .

Ceasefire Unraveling: Drone Strike, US Retaliation, Further Escalation

On June 25, the IRGC struck the Singapore-flagged cargo ship M/V Ever Lovely with a one-way attack drone approximately 8 nautical miles southeast of Dahit, Oman, damaging the ship's bridge but causing no casualties . The attack was the most serious test yet of a fragile interim understanding reached just a week earlier between the US and Iran to end hostilities and reopen the waterway .

In response, on June 26, US Central Command (CENTCOM) struck four Iranian missile and drone storage facilities and coastal radar sites along the Strait and on Qeshm Island . Vice President JD Vance warned that further Iranian attacks "would be met with force" .

Iran responded by striking another commercial vessel, the M/T Kiku, on June 27, prompting a fresh round of US strikes . President Trump condemned Iran's actions as a "foolish violation" of the ceasefire .

Competing Northern and Southern Shipping Corridors

Iran has asserted control over the Strait by designating its own approved transit lanes and warning vessels away from any alternative routes . Oman has backed a separate southern bypass route intended to allow shipping outside Iran's direct supervision, which the IRGC has labeled "highly dangerous" and "unacceptable" . The result is a de facto competition between Iran-controlled northern passages and Omani-facilitated southern alternatives, with Iran threatening action against any vessel using unauthorized paths.

Stranded Vessels, Crew, and Mine-Clearing Efforts

The crisis, which began with the US-Israel air campaign against Iran on February 28, 2026, largely blocked the Strait for months . Iran had cited sea mines in the main shipping channel as a justification for announcing alternative routes in April 2026 . The UN International Maritime Organization (IMO) had been running an evacuation plan for stranded ships, but paused it after the June 25 drone attack to reconfirm safety guarantees . The Washington Institute notes that "uncertain mine threats" remain a significant obstacle to a full return to normal navigation .

Note: The available sources do not provide specific numbers of stranded vessels and crew, nor a detailed status of international mine-clearing operations.