Iran's Mojtaba Khamenei warns US of 'unforgettable lessons', calls Trump's MoU signature 'worthless'

Iran's Supreme Leader Mojtaba Khamenei has warned that the United States will face "unforgettable lessons" if it continues its military campaign against Iran, while declaring US President Donald Trump's signature on a recent memorandum of understanding (MoU) "worthless and invalid."

In a statement broadcast on Iranian state television, Khamenei said Washington had repeatedly violated its commitments under the agreement signed by the two countries.

His remarks came after Iran announced it was suspending its obligations under the MoU, accusing the US of breaching the deal through continued military strikes.

Iran declares MoU no longer valid

Deputy Foreign Minister Kazem Gharibabadi said Tehran had stopped implementing the agreement because the United States had already abandoned its commitments.

"The US has violated its commitments under the agreement and Iran is no longer implementing its obligations," he said on state television.

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The MoU, signed about a month ago, was intended to halt hostilities and create a framework for negotiations over the Strait of Hormuz, sanctions relief and Iran's nuclear programme.

US-Iran exchange fresh strikes

The latest statements came as the United States and Iran exchanged another round of strikes targeting military positions and critical infrastructure.

The US Central Command said American forces carried out a seventh consecutive night of airstrikes, targeting surveillance sites, military logistics infrastructure, underground weapons storage facilities and maritime assets.

Iran, meanwhile, warned that countries hosting US military bases should prepare for a "corresponding response" if their territory is used to launch attacks against the country.

Regional tensions spread

The conflict has increasingly spread across the Gulf, with Kuwait reporting damage to an oil facility and a water desalination plant after Iranian attacks. Several people were injured, while fires broke out at multiple locations.

Iraq said it intercepted attack drones over Irbil, Jordan reported shooting down Iranian missiles, and Bahrain activated air raid sirens as regional air defences responded to incoming threats.

The Gulf Cooperation Council also condemned attacks on civilian infrastructure, accusing Iran of endangering regional security.

US strikes hit Iranian infrastructure

Iranian media reported that US airstrikes damaged electricity and desalination facilities in Hormozgan province, including infrastructure serving around 10,000 people.

Authorities also reported damage to bridges, highways and transport links leading to Bandar Abbas, Iran's main port near the Strait of Hormuz. Iran's Energy Ministry acknowledged attacks on power infrastructure for the first time and urged residents in southern provinces to reduce electricity consumption.

Iranian officials said US strikes over the past three weeks had killed at least 50 people and injured more than 500 others.

Strait of Hormuz remains flashpoint

The conflict continues to centre on the Strait of Hormuz, one of the world's most important energy shipping routes.

Iran has tightened its control over the waterway, leading to a sharp decline in commercial shipping and pushing global oil prices higher. Tehran has insisted the strait should remain under its control, while the US has sought to weaken Iran's ability to disrupt maritime traffic.

President Donald Trump has also renewed threats to target Iranian infrastructure and maintain pressure on Tehran, even as he faces growing domestic calls to avoid a prolonged conflict in the Middle East.