An Iranian drone attack on a cargo vessel in the Strait of Hormuz on Thursday led to the International Maritime Organization (IMO) suspending its efforts to evacuate ships through the strategic waterway. US officials, speaking to the Wall Street Journal, attributed the attack to Iran's Islamic Revolutionary Guard Corps (IRGC). This incident occurred despite an interim peace deal, or memorandum of understanding (MoU), signed last week between Washington and Tehran, which aimed for a gradual resumption of commercial shipping. The MoU included a 60-day window for free passage and laid the groundwork for further negotiations on administering the international body of water. Global energy markets had initially stabilized after the Strait reopened.

The attack near Oman’s Musandam peninsula prompted concern from the shipping association Bimco, which called it a setback to reopening efforts. The IMO Secretary-General, Arsenio Dominguez, emphasized the paramount importance of seafarer safety and paused the evacuation plan until further clarity on navigational safety is obtained. The vessel sustained damage, but no injuries or immediate environmental impact were reported. Although 70 ships had reportedly made the crossing on Wednesday, international shipping companies remain hesitant due to unclear instructions, mixed signals from the US and Iran, and a lack of confidence in the peace deal's longevity.

The incident tests the recently signed US-Iran agreement and raises questions about Iran's commitment to the deal. President Donald Trump had previously warned that negotiations would end if Iran charged ships transiting the Strait, and now the possibility of a violation looms. The attack challenges the notion that the agreement restored freedom of navigation and suggests Iran may still seek to leverage its control over the critical maritime artery. US Secretary of State Marco Rubio is reportedly in the Gulf region to firm up talks, with technical discussions expected to resume next week in Switzerland. This situation highlights divisions within Iran, with hard-line elements seemingly asserting control even as diplomatic channels remain open.