Strait of Hormuz blockade and other major naval sieges in modern times
Strait of [Hormuz](/news/2026/4/24/trumps-may-1-deadline-can-he-continue-war-on-iran-after-that), a narrow waterway once carrying roughly a fifth of the world’s oil and gas, remains effectively closed after the United States and Iran imposed competing [blockades](/news/2026/4/14/how-much-will-us-hormuz-blockade-hurt-iran-and-does-tehran-have-an-escape).
Naval blockades