DUBAI — Iran and Oman are still working out the details of an agreement on the Strait of Hormuz, a senior Iranian source said on Wednesday, after Iran’s Revolutionary Guards said the two countries had agreed on how to share the waterway and its revenues.

The elite force’s spokesperson, echoing Tehran’s official position, also said the strait would not reopen unless the United States met Iran’s conditions under an interim ceasefire agreement struck in June before collapsing. Those conditions include ending the U.S. blockade on Iranian ports, paying compensation and lifting sanctions.

Iran and Oman have held intermittent talks for weeks over control of traffic through the strait, which carried one-fifth of global oil and liquefied natural gas shipments before the war began in February.

Most shipping has since been shut down, disrupting a major route for energy and other cargoes and pushing global energy prices higher, as Tehran and Washington have sought to assert control over the channel through separate blockades.

No final agreement yet

"An agreement with Oman over the Strait of Hormuz has not been finalised," the senior Iranian source told Reuters, adding that negotiations were continuing over the details of the accord.

A spokesperson for Iran’s Islamic Revolutionary Guard Corps (IRGC) said Iran and Oman had reached agreement on their shares of the territory and revenues.

"The Strait of Hormuz belongs to Iran and the country of Oman... We have been in negotiations with Oman for about a month, and we have reached results that are acceptable to both sides," Hossein Mohebbi said in comments published by Iranian state media.

"In these negotiations, agreements have been reached regarding the share of each country in the waters of the Strait and the share of Iran and Oman in its revenues," he added.

It was not immediately clear at what stage of the negotiations those agreements had been reached. Iran had said earlier this month that a deal on the strait was close.

After talks on Tuesday between Iran and Oman, Omani Foreign Minister Badr Albusaidi said he was "hopeful we will soon announce a temporary corridor for the Strait of Hormuz and practical arrangements to restore safe navigation."

U.S. President Donald Trump has warned Oman against cooperating with Iran, telling Fox News on August 17: "If Oman gets in the way, we'll bomb the shit out of them."

The IRGC accused the United States of trying to obstruct Iran’s negotiations with Oman and said that had delayed an agreement.

"If the United States stops obstructing and returns to the agreement, we can open the Strait of Hormuz within the framework of the agreement reached ... If the United States does not accept our conditions, the Strait of Hormuz will not be opened under any circumstances," Mohebbi said.

Shipping attacks continue

Although active hostilities between the United States and Iran have largely eased in recent weeks, diplomatic efforts to reach a peace deal have stalled, and continuing attacks on ships mean passage through the Strait of Hormuz remains dangerous.

Iran announced a blacklist on Sunday of 45 ships in an apparent attempt to stop ship-to-ship transfers used by Gulf energy producers to evade the Iranian blockade. Some companies plan to stop using vessels added to the blacklist, sources said.

To increase pressure on Iran’s economy, the United States has threatened to punish countries that continue doing business with Iran, while saying it would not impose penalties immediately.

Iran has denounced the U.S. effort to isolate its economy as an act of "gross lawlessness," saying it was confident many countries would not join the pressure campaign.

In a letter to the United Nations published on Thursday, Iranian Foreign Minister Abbas Araqchi again condemned the new U.S. sanctions, saying they amounted to collective punishment by denying Iranians access to food, medicine and other necessities.

"Either we defend the principles of sovereign equality, non-interference, and respect for the sovereign rights of States, or we surrender to the unilateralism and bullying of a rogue state," Araqchi wrote.

Oil prices fell for a third day, dropping more than 1.5 percent, after signs of renewed efforts to seek a mediated end to the war that began on February 28 with U.S. and Israeli strikes on Iran.

U.S. said to be holding off on new strikes

Secretary of State Marco Rubio told allies that the United States did not expect to launch new strikes against Iran for now and would instead focus on other forms of pressure, Axios reported on Tuesday.

U.S. public approval of the war has fallen to its lowest level since the conflict’s early days, and Trump’s popularity is also at a record low ahead of congressional elections in November, according to Reuters/Ipsos polling.

Thousands of people have died in the conflict, most of them in Iran and Lebanon, while the United States and Israel have degraded much of Iran’s conventional military capacity. The exact status of Iran’s nuclear program, which the United States and Israel aim to dismantle, remains unknown.