Iran said a planned meeting with Gulf countries in Oman on Monday to discuss the Strait of Hormuz was postponed at the request of Saudi Arabia, which cited the war in Yemen.

"It is true that Saudi Arabia asked for this meeting to be postponed," said foreign ministry spokesman Esmaeil Baqaei. "Invoking the Yemeni issue as the reason is a false pretext," he added at a press conference in Tehran attended by AFP.

Israel's demolition on Thursday of a tunnel network used by Hezbollah as a command center in southern Lebanon, near the border, represents a significant setback for the Iran-backed group.

Experts said that while Hezbollah is far from defeated, the group was now exposed after two fierce wars with Israel in which it suffered major blows including the loss of much of its top leadership and Israel's occupation of parts of southern Lebanon.

Houthi fighters on Sunday said they used drones and missiles to attack a military base in southern Saudi Arabia as renewed fighting with Yemen's government forces forced growing numbers of civilians to flee.

Iraqi authorities announced on Sunday a timeline to reopen three crossings with Iran, a day after closing them following a drone attack originating from their shared border on a Saudi pipeline.

After the Friday night attack on the East-West pipeline, Baghdad sacked the military commander in Missan province near the Iran border, after authorities determined the drones were launched from there.

A ship was struck in the Strait of Hormuz on Sunday, killing one person and injuring three, local Iranian authorities said, as Tehran and Washington clash over the strategic waterway.

President Joseph Aoun visited the country's south on Saturday morning, in a surprise trip to Nabatieh, a city close to a strategic Hezbollah position recently captured and blown up by Israel.

The next round of negotiations between Israel and Lebanon in Rome has been delayed until October, a U.S. official said.

The Lebanese Army has arrested a relative of ousted Syrian ruler Bashar al-Assad, as well as the son of famous Lebanese drug lord Nouh Zaiter, a security source told AFP.

The source, requesting anonymity, said that the military "arrested three people, including Suleiman Hilal al-Assad, the son of ousted Syrian President Bashar al-Assad's cousin" while they were caught using drugs in the eastern Bekaa region.

Iran's foreign ministry said the country would meet with Gulf states in Oman on Monday to discuss the strategic Strait of Hormuz, which the Islamic republic has blockaded during the Middle East war.

The Iran-backed Houthis controlled Yemen's entire Red Sea coast on Saturday after capturing three strategic islands in a lightning offensive the previous day, cementing their hold on a vital shipping corridor linking Europe and Asia.