Mohammad Bagher Ghalibaf, Iran’s parliament speaker and chief negotiator, posted on Telegram: ‘The era of “proportionate responses” is over.’ The IRGC navy separately warned all vessels near the Strait of Hormuz ‘not to be deceived’ by the United States. A vessel was struck by an unknown projectile in the strait the same week, catching fire as crew evacuated.

WHO GHALIBAF IS  

Mohammad Bagher Ghalibaf is not a peripheral figure. He is simultaneously:

▸  Speaker of Iran’s Parliament (Majlis) — the second-highest position in Iran’s legislative branch

▸  Iran’s chief negotiator in the Muscat ceasefire talks — the person who would conduct Session 3

▸  A former IRGC commander and former mayor of Tehran — with direct military and political experience

Ghalibaf posting ‘the era of proportionate responses is over’ on Telegram is not a random hardliner making an inflammatory statement. It is the person who sits across the negotiating table from the US at Session 3 declaring that Iran’s military response doctrine is changing.

WHAT PROPORTIONATE RESPONSES MEANS  

Iran’s documented response doctrine throughout the arc has been calibrated: strike for strike, tanker for tanker, measured escalation that keeps the conflict within a manageable range. ‘Proportionate responses’ is the specific doctrine that produced the tit-for-tat exchange pattern. Declaring that era over means Iran is explicitly moving away from calibrated, matched escalation toward a doctrine of responses that exceed the original provocation in scale or scope.

THE NEGOTIATOR PARADOX  

The specific analytical tension: Ghalibaf is the chief negotiator for Session 3, which was announced for Muscat and which ONYX has identified as the only mechanism for a ceasefire extension before October 6. The same person who would conduct Session 3 has now publicly declared that Iran’s military doctrine is shifting toward disproportionate response. ONYX names this as a specific documented paradox without resolving it: Iran may be simultaneously pursuing negotiation and signaling escalation. Both are documented.

THE IRGC NAVY WARNING  

The IRGC navy separately warned all vessels near Hormuz ‘not to be deceived’ by the US. This warning, combined with Ghalibaf’s statement, constitutes a coordinated set of Iranian messaging that ONYX covers as a documented pattern: parliament speaker declares end of proportionate responses; IRGC navy warns all ships near the strait; a vessel is struck and catches fire the same week.

THE VESSEL FIRE  

UKMTO confirmed a vessel was struck by an unknown projectile near Hormuz, catching fire as crew evacuated. Attribution has not been confirmed. Whether the vessel fire is connected to Ghalibaf’s statement is unconfirmed as it develops. ONYX covers the fire as a confirmed UKMTO incident and the attribution as unconfirmed.

Iran’s chief negotiator — the person who would conduct Session 3 — declared the era of proportionate responses is over. The IRGC warned all ships near Hormuz. A ship caught fire. Session 3 is announced but unscheduled. 19 days to October 6. The person who would negotiate the extension is publicly signaling escalation at the same time.

WHAT HAPPENS NEXT  

▸  Session 3 scheduling — whether Ghalibaf’s statement affects the session’s scheduling or agenda

▸  Iranian military doctrine — whether ‘disproportionate’ means larger-scale attacks or a different category of target

▸  Vessel fire attribution — whether UKMTO or other authorities identify the projectile source

▸  US response — whether Washington publicly responds to Ghalibaf’s statement

CONFIDENCE: HIGH

Ghalibaf Telegram: ‘era proportionate responses over’; IRGC navy warned vessels in Hormuz ‘not to be deceived’; UKMTO confirmed vessel struck unknown projectile; fire crew evacuated, according to confirmed reporting.

⚖️  BIAS CHECK — WHO IS SAYING WHAT
Ghalibaf	Iran’s parliament speaker and chief negotiator; his statement is both a military doctrine declaration and a negotiating signal; ONYX covers both dimensions
IRGC navy	Operational military force issuing warnings to commercial shipping; their warning is a direct signal to vessel operators
UKMTO	Authoritative maritime monitoring; their vessel fire confirmation is the evidentiary basis; attribution unconfirmed
ONYX	Covering Ghalibaf’s statement at its full weight because of his dual role as chief negotiator and escalation signaler; naming the paradox without resolving it

SOURCES

▸  Confirmed reporting — Ghalibaf proportionate responses IRGC Hormuz September 17, 2026