Hormuz Tensions Flare as Iran Accuses US of MoU Breach

Iran’s Parliament Speaker Mohammad Bagher Ghalibaf accused the United States of “major” violations of a ceasefire MoU, turning the Strait of Hormuz into the central pressure point in the latest US-Iran dispute.

Ghalibaf made the accusation in a post on X, alleging that Washington violated major terms of a memorandum of understanding tied to a Middle East ceasefire, according to FXStreet. The specific MoU clauses, the full text of the agreement, and any independent verification of the alleged breaches were not included in the available source material.

Ghalibaf accuses the US of breaching Middle East ceasefire MoU terms

Ghalibaf’s post listed several alleged US breaches, including interference with Iranian arrangements in the Strait of Hormuz, renewed oil sanctions, threats of further strikes, attacks on southern Iran, and continued Israeli action linked to Lebanon.

“Major MOU Violations by the US: Violating Iranian adjustments in the Strait Persistent threats of further strikes... Reinstating oil sanctions... Attacks on southern Iran... Continued Zionist aggression on [Lebanon's flag]... The era of bullying and extortion is over. It leads nowhere. We don’t fold,”

India Today also reported the remarks in a live update, describing Ghalibaf as Iran’s parliament speaker and one of Tehran’s top negotiators in indirect talks with the US, and referring to the deal as the Islamabad Memorandum of Understanding.

The accusation matters because it came from a senior Iranian political figure, not an anonymous official or state media aside. Ghalibaf is helping frame Tehran’s public position at a moment when the ceasefire process appears strained by military claims, shipping risks, and dueling interpretations of who controls safe passage through Hormuz.

Here is what Ghalibaf alleged, based only on the supplied reports:

A spokesperson from Iran’s top joint military command separately said the US army targeted parts of southern Iran in “blatant aggression” and warned Iran’s armed forces would give a “crushing response” to US attacks, according to FXStreet.

That same spokesperson said Iran would not allow US interference in management of the Strait of Hormuz, calling it a critical chokepoint for almost one-fifth of global energy supply.

“Only safe route for commercial ships, oil tankers in the Hormuz is one set by Iran.”

Tehran’s claim sharpens the fight over Hormuz control

The Ghalibaf US MoU violations claim lands in the most sensitive part of the ceasefire arrangement: navigation through Hormuz. The source material does not provide the MoU text, but both Ghalibaf and Iran’s military spokesperson tied their complaints directly to the strait.

That makes this more than a diplomatic insult. If Tehran’s position is that safe commercial passage depends on Iranian-designated routes, and Washington rejects that framing, the dispute becomes operational as well as political.

Related XOOMAR coverage has tracked the same pressure zone, including the tanker incident in Projectile Sets Tanker Ablaze on Strait of Hormuz Oil Route and broader shipping strain in Iran Strait of Hormuz Attack Jolts Global Oil Shipping. Those links matter here because Ghalibaf’s allegation focuses on the same corridor, not a peripheral battlefield.

XOOMAR analysis: The most important phrase in the Iranian messaging is not only “we don’t fold.” It is the claim that the only safe route in Hormuz is the one “set by Iran.” That implies Tehran is using the ceasefire dispute to defend a claimed role over shipping management in one of the world’s most watched energy corridors.

The market reaction, at least in the immediate FXStreet report, was muted. FXStreet said no immediate action was seen in the US Dollar, with the US Dollar Index (DXY) trading marginally lower near 101.12 at press time.

That limited currency move does not settle the geopolitical risk. It only shows that, at that moment, traders had not treated Ghalibaf’s post as a confirmed rupture in the ceasefire process.

US response and MoU details will decide whether this widens

The next phase hinges on documentation. The available material does not show the full MoU, the exact parties bound by it, the compliance mechanism, or whether any mediator has formally logged a breach.

Four facts need confirmation before the Ghalibaf US MoU violations claim can be treated as more than a serious allegation:

• MoU text: The exact terms governing strikes, sanctions, and Hormuz navigation.
• Bound parties: Whether the US, Iran, Israel, or regional actors accepted the same obligations.
• Evidence trail: Whether monitors, mediators, or governments have documented any breach.
• US position: Whether Washington rejects the accusation, ignores it, or answers with its own claims.

The diplomatic signals to track are narrow but consequential. Watch for an official US response, follow-up statements from Tehran, comments from regional governments, and any word from states or bodies involved in the ceasefire arrangement.

If Ghalibaf’s accusation gains traction inside Iran’s political system, it could harden Tehran’s public posture and slow implementation steps linked to the MoU. If Washington dismisses it without offering details, the dispute may turn into another unresolved claim layered onto an already fragile ceasefire process.

For now, the story is clear but incomplete: a senior Iranian figure has accused the US of violating a Middle East ceasefire MoU, and Iran’s military messaging has tied the dispute directly to Hormuz. Until the MoU text or an official US reply emerges, it remains a high-stakes allegation, not a settled finding.

Impact Analysis

• A senior Iranian official is publicly accusing the US of breaching ceasefire-related commitments, raising diplomatic tensions.
• The Strait of Hormuz is central to global oil shipping, so any dispute over access or control could affect energy markets.
• The lack of published MoU details or independent verification makes the claims difficult to assess and increases uncertainty.