The Strait of Hormuz lies between Iran and the United Arab Emirates, measuring about 21 miles at its narrowest point. Its strategic importance stems from the fact that it is the sole exit for approximately 20% of the world’s oil exports. Legally, the United Nations Convention on the Law of the Sea (UNCLOS) defines international waters as those beyond 12 nautical miles from a coastal state’s baseline. The strait’s width—about 28 nautical miles at its widest—places it partially within the territorial seas of both Iran and the UAE, yet the waterway itself remains a corridor of international passage.
While the strait is not fully outside national jurisdictions, UNCLOS guarantees the right of innocent passage for all vessels, including warships. This means that no state can unilaterally close the strait or impose arbitrary restrictions, although they can enforce security measures consistent with international law. The nuanced legal status—partly territorial, partly international—often fuels misunderstandings about sovereignty and freedom of navigation.