To pass the Strait of Hormuz, there is no avoiding territorial waters of either Iran or Oman. Iran would be within their rights to engage a US (or Israeli) naval asset in their territorial waters.
Closing a strait to civilian traffic of non-combatants is another matter and unlikely to be legal. Dr Mark Chadwick: https://www.ntu.ac.uk/about-us/news/news-articles/2026/03/expert-blog-what-legal-right-does-iran-have-to-close-the-strait-of-hormuz





