Omani Foreign Minister Badr Albusaidi said in a post on X Sunday that a planned meeting between Iran and regional countries has been postponed "in the interests of consensus."

The meeting was scheduled to take place Monday in Oman’s southern city of Salalah, where some regional countries were going to be briefed on talks between Iran and Oman regarding arrangements for shipping through the Strait of Hormuz, according to earlier reports by Iranian media.

"We remain committed to fostering dialogue that supports stability and lasting cooperation in our region," Albusaidi added.

-ABC News Somayeh Malekian

President Donald Trump on Sunday said global diesel shortages are not a result of the ongoing conflict in the Middle East, instead blaming Ukrainian strikes on Russian oil facilities and urging Ukrainian President Volodymyr Zelenskyy to "stop knocking out diesel fuel in Russia."

"This isn't done by the Middle East. This is done by what's happening with Russia and Ukraine. So we spoke to Mr. Zelenskyy about it. There are plenty of other targets," Trump said to reporters at his golf course in Doonberg, Ireland, during the final day of the 2026 Amgen Irish Open.

"Don't hit diesel fuel because that's hurting. That's hurting the world. We don't want him to hit diesel fuel," Trump added of Zelenskyy.

Trump also again said the war in Iran will end "right after the midterms," though suggested a conclusion may come sooner. "Gasoline's going to drop like a rock, just like it was just before I got -- I mean, I knew what I was doing. I had to do it," Trump said.

"Iran wants to make a deal so badly. They are calling constantly. They want to make a deal. They got to make the right deal. I'm not going to make a deal that's no good," he added.

Asked about Monday's planned meeting in Oman between representatives of the Gulf nations and Iran, Trump said, "I don't care. That's up to them, that's fine. They could be happy."

"We'll ultimately get out, unless we decide to stay and keep the oil, like Venezuela," Trump said.

-ABC News' Emily Chang

(This post has been updated.)

An Iranian commercial vessel was attacked in the Strait of Hormuz early Sunday morning, leaving one person dead and four crew members wounded, according to Iranian state media.

The state-run Islamic Republic News Agency quoted the governor of Qeshm Island saying that an Iranian container ship was hit by an “unidentified projectile” near the island of Hengam.

The episode came as Iran prepared to meet with Gulf states in Oman on Monday to discuss safe passage for shipping traffic in the Strait of Hormuz.

-ABC News’ Claire Bower

The Saudi Civil Defense spokesperson said Saturday that a projectile fired by the Iran-backed Houthi rebels in Yemen fell in the Al-Tawwal governorate in the Jazan region, which borders Houthi-controlled Yemen from the north along the Red Sea coast.

The attack injured two people and damaged a mosque, several buildings and vehicles, the spokesperson said in a statement posted to the Civil Defense's X account.

-ABC News' Somayeh Malekian

Iraqi Prime Minister Ali al-Zaidi said he had ordered an investigation into the operations command in Maysan province, on the border with Iran, and dismissed the province's commander after authorities confirmed that the attacks targeting a Saudi Arabian pipeline were launched from a site within the province.