Iran Expands 22,000-Sq-Km Hormuz Control Claim as US Boards Tanker
Updated
Updated · BBC.com · May 21
Iran Expands 22,000-Sq-Km Hormuz Control Claim as US Boards Tanker
3 articles · Updated · BBC.com · May 21
Iran's new Persian Gulf Strait Authority published a map claiming armed-forces oversight across more than 22,000 sq km around the Strait of Hormuz and said all transit requires its authorization.
The move followed a US marine boarding of the Iran-bound tanker Celestial Sea in the Gulf of Oman; Centcom said the vessel was suspected of breaching the US blockade of Iranian ports and was later released after a search.
The claimed zone extends into Omani and UAE waters, drawing a sharp UAE rejection, while Washington has told ships not to comply with Iranian rules despite Tehran's refusal to ratify the UN sea convention.
Centcom says it has redirected 94 commercial ships and disabled four vessels since the blockade began on April 13, underscoring how the Hormuz standoff is colliding with fragile US-Iran diplomacy and renewed military threats.
As Iran charges for passage through Hormuz, is the era of free navigation in global chokepoints over?
Beyond oil, how will the Hormuz blockade create a cascading global food crisis that could starve millions?
With Iran's leadership in turmoil, will its new ruler risk a wider regional war to consolidate power?
Iran’s Expanded Strait of Hormuz Control: Global Economic Shockwaves, Maritime Law Crisis, and Strategic Power Shift (May 2026)
Overview
In May 2026, Iran expanded its maritime control zone in the Strait of Hormuz, following a U.S. naval blockade targeting Iranian shipping. The IRGC Navy released a new map and introduced a system requiring all vessels to get explicit permission and coordinate with Iranian forces before passing through the strait. This move, aimed at guaranteeing international trade security, has shifted control of a vital shipping lane to Iran. The new regime has increased ship traffic under IRGC protection, but also raised global concerns about freedom of navigation, economic stability, and regional security.