Citing a source close to Iran's negotiating team, the semi-official Tasnim news agency said that the understanding was reached after "intensive technical and diplomatic talks between Iran and Oman, which culminated in a final agreement in late August."

Under the understanding, the Gulf's entry route "lies entirely within Iran's territorial waters," and a portion of the exit route also falls "within Iranian territorial waters," the source said.

However, the understanding does not ‌provide for the immediate reopening ​of the Strait ​of Hormuz but ⁠establishes the basis ​on which it ​could reopen, according the source.

The source ‌said ⁠the arrangement would be a step towards Iran ​exercising ​sovereignty ⁠over the strait and ​that its ​reopening ⁠depended entirely on the United States ⁠meeting ​Tehran's ​conditions.