In practical terms, that policy transformed the strait from an open international passage into something closer to a politically controlled corridor. Instead of relying solely on the traditional maritime norm of free navigation, governments and shipping operators began seeking diplomatic assurances from Iran before sending vessels through the area.
Iran has maintained that the waterway itself is not completely closed but has warned that vessels linked to the United States, Israel, or their partners would not be permitted to transit.
The disruption is closely tied to the wider regional conflict that intensified in early 2026.
The war began after U.S. and Israeli airstrikes on Iranian targets on 28 February 2026, which triggered a broader confrontation between Iran and its adversaries.
Following the attacks, Iran moved to assert control over shipping in the Strait of Hormuz and warned that ships associated with countries involved in the strikes could be denied passage.
The result was a sharp drop in vessel traffic through one of the world’s busiest maritime routes.
The shipping bottleneck quickly stranded vessels waiting for safe transit.
Other estimates based on International Maritime Organization data suggest a much larger disruption at certain points in the crisis, with around 2,000 ships and roughly 20,000 seafarers stuck in or around the strait.
These differing figures reflect the rapidly changing situation as some ships obtained permission to pass while others delayed their voyages or rerouted.
Because Iran’s policy required coordination for transit, several governments turned to direct diplomacy.
Thailand became one of the clearest examples. Thai officials held talks with Iranian counterparts after eight Thai‑flagged vessels were stranded near the strait, and the country later secured safe passage for some of its oil tankers.
Pakistan also reached an arrangement allowing 20 Pakistani‑flagged ships to transit the strait in stages, demonstrating how diplomatic negotiation became a practical requirement for shipping.
Regional reports indicate that Malaysia may have secured passage for some vessels after diplomatic contacts, although the sourcing for that claim is less consistent than for Thailand or Pakistan.
Meanwhile, several major powers—including Britain, France, Germany, Italy, the Netherlands, and Japan—have expressed support for international efforts to ensure safe passage through Hormuz, though confirmed bilateral deals between those countries and Iran are less clearly documented.
The intense international attention stems from the strait’s central role in global energy trade.
Under normal conditions, enormous volumes of crude oil and liquefied natural gas pass through Hormuz each day, linking Gulf producers to markets in Asia, Europe, and beyond.
When traffic slows or becomes risky, the consequences spread quickly:
Even partial restrictions can therefore ripple through global markets.
The crisis has also revived long‑standing legal disputes about navigation rights in international straits.
Under the United Nations Convention on the Law of the Sea (UNCLOS), vessels generally enjoy the right of transit passage through straits used for international navigation—meaning ships should be able to move continuously and without obstruction.
Legal experts note that international straits normally cannot be converted into permission‑based corridors controlled by a single country.
However, the legal situation in Hormuz is complicated. The strait lies between Iran and Oman, and Iran has historically taken a different interpretation of how navigation rights apply in its territorial waters.
The 2026 crisis demonstrates how quickly geopolitical conflict can disrupt critical infrastructure for global trade.
A maritime route that usually functions as a routine shipping lane has temporarily become a bargaining tool in a regional confrontation—forcing governments, shipping companies, and energy traders to rely on diplomacy simply to move cargo through one of the world’s most important waterways.
As long as tensions persist, safe passage through the Strait of Hormuz may depend less on established maritime norms and more on political negotiation, military deterrence, and shifting alliances.
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