Strait of Hormuz Closed Again Amid Escalating Tensions and Attacks on Shipping

Sophie Laurent, Europe Correspondent
5 Min Read
⏱️ 4 min read

In a significant escalation of maritime tensions, Iran has declared the closure of the Strait of Hormuz to commercial vessels, warning that any ship approaching this critical waterway will face targeting. This announcement follows reports of attacks on vessels in or near the strait over the weekend, including a tanker. The Islamic Revolution Guard Corps (IRGC) attributed this decision to a persistent blockade enforced by the United States, just a day after Iran’s foreign minister indicated that the strait had been momentarily reopened.

Iranian Military’s Stern Warning

The IRGC issued a stark warning stating, “No vessel is to move from its anchorage in the Persian Gulf or the Sea of Oman.” Although several vessels successfully navigated the strait under IRGC oversight since Friday night, the military body has now reaffirmed its intent to close the strait until the US ceases its blockade of Iranian ports. The IRGC further asserted that any vessel approaching the Strait of Hormuz would be considered as cooperating with adversaries, thus rendering them targets.

US President Donald Trump has responded vehemently, insisting that Iran cannot intimidate the United States with threats concerning the waterway. He reaffirmed the commitment to maintaining a naval blockade of Iranian ports until a peace agreement is reached between the two nations. The current ceasefire, which has been in effect since early April, is set to expire on 22 April, casting further uncertainty on the situation.

Recent Attacks on Shipping

Reports have emerged detailing several incidents of aggression at sea. The UK Maritime Trade Operations (UKMTO) noted that two Iranian gunboats opened fire on a tanker in the strait. Additionally, a container ship was struck by an unidentified projectile off the northeastern coast of Oman, resulting in damage to some of its cargo. Sources have also indicated that at least two merchant vessels were targeted by gunfire as they attempted to traverse the strait.

In response to these alarming developments, India’s foreign ministry summoned the Iranian ambassador to express its “deep concern” regarding the shooting incident involving two Indian-flagged ships in the strait. The diplomatic community is watching these incidents closely, as the strait is a vital artery for global oil and liquefied natural gas transportation, with approximately 20% of the world’s supply passing through.

Implications for Global Energy Markets

The Strait of Hormuz serves as a critical juncture, connecting the Gulf to the Arabian Sea and providing the only maritime access for several oil-producing nations. The ongoing conflict, exacerbated by recent attacks, has led to a substantial decrease in shipping traffic through the strait, raising alarm over global energy prices. Following the escalation of hostilities beginning with US and Israeli strikes against Iran on 28 February, the price of oil has reportedly surged above $100 per barrel.

Despite Iran’s claims that the Strait of Hormuz remains “open,” tracking data from MarineTraffic suggests that very few vessels are currently making the journey, with many opting for alternate routes in light of the IRGC’s threats. The potential for further military action looms large, as Iran has previously indicated intentions to target tankers and has warned of mine-laying activities in the waterway.

Why it Matters

The closure of the Strait of Hormuz could have far-reaching consequences for the global economy, particularly in the realm of energy prices and supply chains. This latest escalation not only threatens the stability of regional trade but also raises significant concerns over maritime safety and international relations. As negotiations between Iran and the US remain tenuous, the risk of a protracted conflict appears imminent, prompting urgency for diplomatic interventions to avert further escalation. The world watches closely, aware that the resolution of these tensions is vital for the security and stability of global energy markets.

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Sophie Laurent covers European affairs with expertise in EU institutions, Brexit implementation, and continental politics. Born in Lyon and educated at Sciences Po Paris, she is fluent in French, German, and English. She previously worked as Brussels correspondent for France 24 and maintains an extensive network of EU contacts.
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