Khamenei calls Trump's signature 'worthless'
Get the Geopolitics newsletter
Daily geopolitics — wars, elections, sanctions, the diplomatic moves that move markets. Free.
- Mojtaba Khamenei issued a written statement Saturday (July 18, 2026) declaring that repeated U.S. breaches of a presidential memorandum of understanding proved Trump's signature was "utterly worthless and devoid of credibility."
- Tehran and Washington exchanged military strikes after a ceasefire agreement collapsed the prior week, with the source flagging fears of a return to all-out war.
- Khamenei also warned the U.S. that the Iranian nation and the broader "resistance front" had "unforgettable lessons" in store for it.
- The MOU at the center of the dispute was specifically signed by the presidents of Iran and the United States, anchoring Khamenei's credibility challenge at the head-of-state level.
Why it matters: Khamenei's targeting of Trump's personal credibility — not just U.S. policy — narrows the diplomatic off-ramp while dragging Iran's 'resistance front' allies into the confrontation. With the ceasefire already collapsed and strikes exchanged as of mid-July 2026, the source explicitly flags a fear of return to all-out war between the two nations.
