Rania Abushamala
18 July 2026•Update: 18 July 2026
Iran’s Supreme Leader Mojtaba Khamenei on Saturday accused the US of repeatedly violating a memorandum of understanding signed by the presidents of the two countries, saying the alleged breaches showed that US President Donald Trump’s signature was “utterly worthless.”
“The repeated breaches of the agreement by the Great Satan [the US] regarding the MOU signed by the Presidents of Iran and the US have once again laid bare a fundamental truth: the signature of the US President is utterly worthless and devoid of credibility,” Khamenei said in a statement on the US social media company X.
“Coercion, totalitarianism, and brutality are inseparable components of the US creed and doctrine,” he added.
Khamenei warned that as the “American enemy is seeking to escalate the conflict thereby incurring even heavier costs and further humiliation,” it should know that the Iranian people and the “Resistance Front” have “unforgettable lessons” in store for it.
“One of the most fundamental imperatives at this juncture is upholding the sacred unity among all segments of the public and officials and protecting the dignity and independence of our beloved Iran, particularly in the face of the criminal and cunning US enemy,” he said.
“The valor of the Islamic fighters and the courage of the people in the southern regions in recent days are examples of the Iranian nation’s unforgettable lessons for the American enemy,” the supreme leader added.
Iranian President Masoud Pezeshkian also called for national unity, writing on X: “Adherence to the requirements of sacred unity and avoidance of disagreement and division are the key to victory at this historic juncture.”
Earlier, Iran's Deputy Foreign Minister Kazem Gharibabadi said that Tehran has suspended its commitments to the MoU after “the US violated its commitments.”
Tensions have heightened in the Middle East, where the US and Iran continue to exchange attacks.
The military escalation comes despite a Pakistan-brokered memorandum of understanding signed in June to end the war and reach a lasting peace agreement.