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A Memorandum Signed in Switzerland

On June 17, 2026, the United States and Iran signed a memorandum of understanding (MoU) in Switzerland, following months of arduous negotiations with Pakistan serving as a key mediator. The text called for a halt to strikes on “all fronts”—a formulation vague enough to include U.S. operations against Iran’s allies in Iraq, Yemen, and Lebanon, as well as IRGC activities in the Persian Gulf. Both parties had 60 days to negotiate the details of full implementation.

The issues on the table were considerable: arrangements regarding the Strait of Hormuz, the lifting of a U.S. blockade on Iranian ports, sanctions, and the future of Iran’s stockpile of highly enriched uranium. On paper, this was the most serious attempt at normalization between Washington and Tehran since the 2015 nuclear deal. And just as in 2015, forces on both sides were seeking to derail it before it could take root.

The Terms of the Agreement and Its Ambiguities

The text of the MoU contained a crucial clause: fighting had to cease on “all fronts” before certain sensitive issues could be addressed. However, at the time of signing, fighting was continuing in Lebanon—a front that Iran considers linked to operations supported by Israel with U.S. approval. This ambiguity would provide the IRGC with a pretext to justify its subsequent actions: if the United States had not halted strikes in all areas, the agreement was null and void on their part.

Pakistan, a key mediator, had committed to facilitating the resumption of technical discussions scheduled for Tuesday, June 30. The Trump administration had publicly stated that nothing had been canceled and that the technical talks remained on track. But between the announcement on June 17 and June 26, ten days had passed—and the Strait of Hormuz was becoming a zone of direct confrontation.


An agreement with an “all fronts” clause in a conflict that stretches from Lebanon to Yemen via the Persian Gulf is an agreement built on sand. It’s not that the diplomats didn’t know this—it’s that they thought the alternative was worse. This calculation deserves to be examined, not just accepted.

This content was created with the help of AI.

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