Event·Military·High severity

Iran's military declares Strait of Hormuz re-closure; US and UKMTO say unverified

20 JUN 2026 · 1400Z

Iran's joint military command declared the Strait of Hormuz closed in response to alleged ceasefire violations. Authorities assess this as strategic messaging rather than an operational closure: JMIC Advisory 009-26 (18 Jun) rates the Regional Threat Level 'Moderate' (down from Substantial/Severe) and judges the strait open, with no independent confirmation of a physical closure or new vessel attacks; the U.S. (CENTCOM/Energy Secretary) reports dozens of ships still transiting via the southern Omani route. Even so, trade press (The Maritime Executive) reports Hormuz traffic dropping sharply as