Iran Attacks Multiple Gulf States, Declares Strait of Hormuz Closed Amid U.S. Strikes

Iran launched a significant and widespread military assault on Sunday, targeting U.S. facilities in multiple Gulf nations and declaring the vital Strait of Hormuz closed to unauthorized shipping. The attacks prompted a heavy response from U.S. forces, marking a severe escalation in the ongoing conflict that jeopardizes a critical artery for global energy markets.

A Broadening Conflict

In a marked expansion of hostilities, Iran's Revolutionary Guards claimed responsibility for strikes on U.S. assets in several regional states. For the first time since April, attacks targeted Qatar, a key mediator in ceasefire talks. The United Arab Emirates, which had not been targeted since early May, also reported engaging incoming missiles and drones.

According to reports from regional governments:

• Qatar said three people were injured by falling shrapnel and holds Iran "fully legally responsible."
• The UAE and Bahrain reported intercepting multiple Iranian aerial attacks.
• Kuwait confirmed an attack on an oil drilling platform injured one worker.
• Oman summoned Iran's ambassador to protest drone attacks in two of its regions.

Tehran also intensified its campaign against maritime traffic, stating it had disabled two vessels. Iran's newly formed Persian Gulf Strait Authority announced that passage through the strait was "not currently possible," citing what it called "illegal movements of the United States military forces."

U.S. Response and Market Implications

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The U.S. military has conducted significant counter-strikes in response. U.S. Central Command reported hitting 140 Iranian military targets on Saturday alone and more than 300 targets over three nights in an effort "to degrade Iran’s ability to attack civilian mariners and commercial vessels."

Despite Iran's declaration, the U.S. insisted that the waterway remains open. A U.S. statement asserted, "Iran does not control the strait. Traffic is flowing." The U.S. Navy-led Joint Maritime Information Center advised that an "expanded" southern shipping route near Oman was available for transit.

The escalating conflict threatens a critical chokepoint for global energy supplies. Before the war, the Strait of Hormuz carried approximately one-fifth of the world's oil and liquefied natural gas (LNG) shipments. An effective blockade or sustained conflict in the region could drive energy prices higher, adding to global inflationary pressures.

Diplomatic Breakdown

This new round of hostilities follows the collapse of a fragile interim agreement signed last month, which was intended to reopen the strait and de-escalate the conflict. Last week, U.S. President Donald Trump stated he considers the ceasefire to be over, though he left open the possibility of further negotiations.

Iran's hardening position was underscored by a post on the social media platform X from its top negotiator, Mohammad Baqer Qalibaf, who wrote, "The era of one-sided deals is OVER. We told you: keep your word or pay the price."