So one outcome is that apparently Iran is now making money from ships moving through Hormuz. The Sound Dues ran for 400 years until the 1850s, and provided the Danish government with two thirds of their income. The Straits of Hormuz are so narrow that Iranian and Omani waters overlap. There are two channels; one to leave the Persian Gulf and one to enter the Persian Gulf. Inbound traffic passes closest to Iran. "Transit Passage" means shipping can use the channels, without permission, including warships. The rule is set by the United Nations Convention on the Law of the Sea, but Iran doesn't accept all of this. But neither does the United States. Transit Passage does not apply to the Dardenelles; Turkeys exerts control over what enters or leaves the Black Sea, but this predates the UN. Transit Passage is a continual issue in the Straits of Malacca and the South China Sea. Its a legal minefield; technically the idea of a toll is illegal.
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