Iran is preparing a list of conditions for reopening the Strait of Hormuz, with Tehran demanding practical steps from the United States before allowing shipping through the strategic waterway to resume, Iranian security chief Mohsen Rezaei has said.

Rezaei, secretary of Iran’s Supreme National Security Council, said mediators had asked Tehran to set out its conditions and that ending the regional war would be among them. He said Iran had also reached an understanding with Oman on establishing a shipping corridor through the strait, with parts of the route passing through Omani and Iranian waters.

According to Rezaei, ships would be allowed to use a designated central channel if Washington meets Iran’s demands.

Reuters reported that Iran’s Islamic Revolutionary Guard Corps has separately said the strait would not reopen unless the United States lifts what Tehran calls a blockade of Iranian ports, pays compensation and removes sanctions.

Tehran is drafting the conditions in response to requests from mediators and that the US would first need to take practical steps to meet them before the waterway is reopened, according to Al Jazeera reports.

Iran and Oman are still working on details of the proposed arrangement, including how control of the strait and revenues from shipping would be shared.

The Strait of Hormuz is one of the world’s most important energy chokepoints. Before the war began in February, around one-fifth of global oil and liquefied natural gas shipments passed through the waterway. Maritime traffic has largely halted since then.

Ceasefire agreements announced by Washington and Tehran in April and June were intended to restore shipping through the strait, but neither arrangement held.