US-Iran Gulf Strikes Escalate Over Strait of Hormuz Agreement

Military clashes in the Persian Gulf have intensified as the United States and Iran trade retaliatory strikes. The conflict stems from bitter disagreements over a critical maritime security clause, threatening global energy supply chains and disrupting commercial shipping lanes through the strategically vital Strait of Hormuz.

Strikes exchanged in the Persian Gulf highlight rising tensions over Article 5 of the US-Iran MoU concerning the Strait of Hormuz.

Tensions between the United States and Iran have intensified following a series of strikes in the Persian Gulf, drawing attention to Article 5 of a recent Memorandum of Understanding (MoU) signed on June 17. This fragile agreement, brokered by Pakistan, aimed to facilitate safe navigation through the key maritime passage of the Strait of Hormuz, which is crucial for global oil transport.

Both nations have accused each other of violating the MoU, particularly its provisions related to the reopening and management of the Strait of Hormuz. The recent exchange of strikes involved attacks on commercial vessels and subsequent military actions, highlighting differing interpretations and commitments under the MoU.

Article 5 stipulates that Iran is responsible for ensuring the safe passage of commercial ships without transit charges for a period of 60 days. It also requires the removal of military obstructions within 30 days to facilitate shipping activities. Moreover, the agreement mandates dialogue with Oman and other Gulf states regarding future management of the Strait, consistent with international law and the sovereignty of coastal nations.

Despite signing the MoU, the two countries diverge sharply on its implementation. Iran maintains that the responsibility lies solely with it to manage passage through the Strait, insisting on a corridor close to its mainland for commercial vessels, while opposing any alternative routes nearer Oman. In recent days, however, several commercial ships have opted for routes south of the Strait, prompting Iranian officials to voice concerns that these decisions undermine the MoU’s objectives.

Iranian Foreign Minister Abbas Araghchi stated that altering the current agreement would complicate the situation further. “Any attempt to adopt new or separate arrangements will lead to more complicated situations and delays in reopening the Strait of Hormuz,” he remarked. He emphasised that the management of the Strait rests fully with Iran, warning against any unilateral actions that could exacerbate tensions.

Analysts suggest that the United States may be attempting to circumvent Iranian control of the Strait. Hassan Ahmadian, an associate professor at the University of Tehran, contended that Washington is looking to modify the MoU’s terms despite having initially agreed to them. “The United States wants different arrangements in place while obliging Iran to adhere to its commitments,” he commented.

The situation escalated further after commercial vessels came under attack. A Singapore-flagged ship, Ever Lovely, was reportedly struck, followed by another strike on a Panama-flagged vessel, Kiku. The United States has attributed these incidents to Iranian threats and responded with military actions against Iranian positions.

Iran has denied responsibility for these initial attacks but retaliated against American military bases in Kuwait and Bahrain. The Iranian Revolutionary Guard has reiterated that only their designated shipping corridor is valid, signalling a potential restriction on vessel traffic that could impact global oil supply chains. According to maritime reports, vessel traffic through the Strait has already diminished significantly, with several ships altering their courses in response to recent threats.

Iran’s Araghchi described the US military operations as violations of both the United Nations Charter and the MoU. Meanwhile, US President Donald Trump defended the actions taken by US forces, asserting their necessity following Iran’s violation of ceasefire terms.

As tensions remain high, the ramifications of these developments may have significant impacts on global energy supplies and regional stability. Both the US and Iran must navigate this fragile situation carefully to avoid further escalation in the already volatile area surrounding the Strait of Hormuz.

What is Article 5?

Article 5 of the interim US-Iran MoU focuses on restoring safe commercial navigation through the Strait of Hormuz after months of conflict.

Under the agreement, Iran committed to:

• Ensure the safe passage of commercial vessels through the Strait of Hormuz.
• Allow shipping between the Persian Gulf and the Sea of Oman free of charge for 60 days.
• Gradually restore full commercial traffic within 30 days after removing military obstacles and conducting de-mining operations.
• Hold consultations with Oman and other Gulf littoral states to determine the future administration and maritime services in the strait, in accordance with international law and the sovereign rights of coastal states.

The article effectively makes Iran responsible for facilitating maritime traffic while requiring discussions over the future management of the waterway.

Why is Article 5 controversial?

The disagreement stems from differing interpretations of how shipping should resume.

The United States has backed alternative transit arrangements coordinated with Oman and the International Maritime Organization (IMO), seeking to route vessels closer to Omani territorial waters to reduce risks.

Iran strongly opposes that approach.

Tehran argues that Article 5 recognises its role in administering navigation through the Strait of Hormuz and insists commercial vessels should use the northern shipping corridor within Iranian territorial waters.

Iranian Foreign Minister Abbas Araghchi warned last week that any attempt to establish alternative shipping arrangements would increase tensions and delay the reopening of the strait.

The Islamic Revolutionary Guard Corps (IRGC) also warned ships that the northern corridor was the only “authorised route.”

How did the latest crisis begin?

The dispute escalated on Thursday when the IRGC reportedly ordered four tankers travelling through the southern shipping lane in Omani waters to turn back.

Several other vessels altered course before completing their transit.

The situation worsened after two commercial ships were attacked:

• The Singapore-flagged Ever Lovely was struck by a drone on Friday.
• The Panama-flagged Kiku was hit on Saturday.

Although Iran did not claim responsibility for either incident, Washington blamed Tehran for threatening commercial navigation.

Why did the US launch strikes?

Following the attacks on commercial vessels, the US military carried out strikes against Iranian military targets along the country’s southern coast.

According to US Central Command (CENTCOM), American forces targeted:

• Missile and drone storage facilities
• Coastal radar systems
• Surveillance infrastructure
• Communication networks
• Naval minelaying capabilities

President Donald Trump said the strikes were retaliation for Iran’s repeated violations of the ceasefire agreement.

“Iranian missile and drone storage locations, and coastal radar sites” were targeted for violating the ceasefire agreement, Trump said, warning that Washington could “militarily complete the job” if Tehran continued its actions.

CENTCOM said the attacks were conducted “in direct response to continued Iranian aggression against commercial shipping.”

How does Iran justify its response?

Tehran argues the United States—not Iran—breached the agreement first.

Iran’s Foreign Ministry described the US strikes as:

• A violation of the UN Charter.
• A clear breach of Paragraph 1 of the memorandum of understanding.
• Evidence that Washington does not honour its commitments.

The IRGC also maintains that Article 5 effectively recognises Iran’s authority over shipping arrangements in the Strait of Hormuz.

In response to the US attacks, Iran launched missiles and drones targeting US military facilities, including Kuwait’s Ali Al Salem Air Base and the headquarters of the US Fifth Fleet in Bahrain.

The IRGC described the attacks as a “decisive response” to American military action.

Why is the Strait of Hormuz so important?

The Strait of Hormuz remains the world’s most critical energy chokepoint. Approximately one-fifth of global petroleum liquids and liquefied natural gas flows through this narrow waterway daily, making its stability vital to international markets.

Future Outlook

The collapse of the June 17 agreement risks plunging the Middle East into an open-ended maritime conflict. If the United States continues executing coastal infrastructure strikes and Iran maintains its targeting of regional American bases, global insurance syndicates are expected to raise maritime freight premiums. This friction could force a permanent rerouting of international supertankers, severely impacting global energy distribution.

FAQs

What is Article 5 of the US-Iran MoU?

Article 5 is a specific clause within the interim agreement signed on June 17, 2026. It mandates that Iran ensure safe, free commercial transit through the Strait of Hormuz for 60 days while removing military blockades within 30 days.

Why are the US and Iran fighting over the shipping lanes?

The conflict centers on a dispute over geography. The United States and Oman want commercial ships to utilize southern lanes near Omani waters to minimize security risks, whereas Tehran demands all vessels utilize the northern corridor inside Iranian territory.

Which commercial ships were targeted in the Persian Gulf?

Two cargo vessels were struck by explosive drones during the maritime escalation: the Singapore-flagged vessel Ever Lovely and the Panama-flagged tanker Kiku.

Where did Iran launch its retaliatory military strikes?

Following U.S. strikes on its coastal infrastructure, Iran launched retaliatory drone and missile barrages against American military installations. These targeted Ali Al Salem Air Base in Kuwait and the U.S. Fifth Fleet Headquarters in Bahrain.