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Iran says it is closing strait of Hormuz over Israeli strikes in Lebanon

Published June 21, 2026 · Updated June 21, 2026 · By Patricia Davis

Iran says it is closing strait of Hormuz over Israeli strikes in Lebanon

Iran says it is closing strait - Following a series of Israeli military actions in southern Lebanon, Iran has declared its intent to restrict access to the strategic Hormuz Strait, a move that could disrupt the recent US-Iran interim peace agreement. The Islamic Revolutionary Guard Corps (IRGC) issued warnings to maritime vessels, urging them to avoid the critical waterway, which serves as a vital artery for global oil and gas trade. This action came amid escalating tensions, with Iran accusing Israel of violating a ceasefire and the US of failing to uphold its commitments to the deal. The situation has raised concerns about the potential collapse of the fragile agreement, which was signed just days prior and aims to de-escalate hostilities in the region.

The IRGC’s statement emphasized Israel’s role in the conflict, highlighting what it described as the country’s ongoing aggression against Lebanese territory. By threatening to close the strait, Iran has signaled its readiness to take decisive action, even as it seeks to strengthen its position in negotiations with the US. However, the extent of this closure remains unclear, with no immediate confirmation of ships being diverted or blocked. Meanwhile, talks in Switzerland, set to begin on Sunday, are expected to explore ways to convert the interim agreement into a more comprehensive deal addressing Iran’s nuclear program. These discussions are crucial, as the current arrangement only covers a temporary halt to hostilities and does not resolve deeper issues.

Despite the diplomatic maneuvering, the Israeli strikes have caused significant casualties in Lebanon. Local authorities reported at least 16 deaths and 12 injuries in the Nabatieh district, attributed to the attacks. The IRGC’s decision to close the strait has been framed as a response to these actions, which it claims have undermined the ceasefire. The US, however, has dismissed the closure as a threat, with a spokesperson from the Central Command, Navy Capt Tim Hawkins, asserting,

“Iran does not control the strait of Hormuz. Traffic continues to flow, and US forces are monitoring the situation to ensure this remains the case.”

This reassurance comes as the US prepares to send Vice-President JD Vance to Switzerland, where he will join negotiations aimed at solidifying the deal. Pakistan, the key mediator, has confirmed the talks will proceed, with reports indicating that Iranian officials have already departed for the discussions.

The conflict between Hezbollah and Israel has been a central challenge to the new agreement. Hezbollah, closely aligned with Iran, has launched rocket and drone attacks on Israeli civilian areas, prompting Israeli retaliatory strikes. These strikes have targeted Hezbollah’s positions in southern Lebanon, leading to civilian casualties and disrupting the fragile ceasefire. While both sides have expressed willingness to negotiate, Hezbollah has not officially declared a halt to its operations, citing the need for Israel to fully withdraw from the region. “There is talk of a ceasefire,” said Hassan Fadlallah, a Hezbollah parliamentarian, “but for us, the main concern is that the enemy stops attacking our country and villages and does not seek to occupy new positions.”

The current round of hostilities began shortly after the US and Israel launched attacks on Iran in early February, triggering a broader regional confrontation. Hezbollah’s response included launching rockets at Israeli communities, while Israel expanded its military presence in southern Lebanon to create a buffer zone. This has led to widespread destruction and displacement, with the interim agreement offering little immediate relief. Critics within Israel argue that the deal fails to address their security concerns, as it allows Hezbollah to continue its operations without a clear commitment to cease them. The agreement, however, remains a critical step toward reducing the war’s impact, with the US promising to lift its naval blockade in exchange for Iran reopening the strait of Hormuz.

The closure of the Hormuz Strait has raised questions about the practicality of the deal, as it was a key condition for the US to lift its blockade. Before the conflict, the strait accounted for a fifth of global oil and gas shipments, making it a linchpin of international energy markets. Its potential shutdown could lead to skyrocketing energy prices and economic instability, underscoring the stakes of the negotiations. Analysts warn that the ongoing violence and political maneuvering may erode confidence in the agreement, with fears that the conflict could reignite without a durable resolution. The regional war, which has already claimed over 7,000 lives, has also strained global supply chains, with energy prices reaching historic highs and the threat of economic chaos looming.

Despite these challenges, both Iran and the US have shown determination to advance the talks. The interim agreement, while not perfect, provides a framework for reducing hostilities and fostering dialogue. However, its success hinges on the willingness of all parties to adhere to its terms. Israel’s Prime Minister Benjamin Netanyahu has pledged to maintain a military presence in southern Lebanon until the threat to his country is neutralized, a stance that could complicate the negotiations. Meanwhile, Hezbollah’s refusal to halt its attacks unless Israel withdraws from the region highlights the deep-seated mistrust between the two sides.

As the situation unfolds, the international community watches closely. The Hormuz Strait’s status remains a focal point, with its closure potentially reshaping global energy dynamics. The Swiss talks, however, offer a glimmer of hope, providing a platform to address the broader implications of the conflict. Whether the agreement can withstand the pressures of ongoing violence and political discord will determine its success in bringing lasting peace to the region. For now, the battle lines remain drawn, and the fate of the interim deal hangs in the balance.