The prospect of a US service person being alive and on the run inside Iran raises the stakes for Washington in a conflict with low public support and no sign of an imminent end.

Just 221 commodities vessels have crossed the Strait of Hormuz since March 1, some more than once, down from around 120 daily transits during peacetime.

Indonesia’s participation in the United States-led Board of Peace (BoP) is facing growing domestic opposition, with a recent national survey showing most Indonesians disapprove of joining US President Donald Trump’s initiative and deploying troops amid the escalating US-Israeli war against Iran.

Indonesia’s major Islamic organizations have expressed solidarity with Iran, backing the country’s call for a unified response to what it describes as military aggression by the United States and Israel, and urging a swift end to the conflict as tensions in the Middle East escalate.

Indonesia is coordinating closely with the United Nations to repatriate the bodies of three Indonesian peacekeepers killed in Israeli strikes in southern Lebanon last week, the Foreign Ministry has confirmed, with the remains expected to return home in the next few days.

"The Iranian Foreign Minister assured the (Foreign) Secretary that Iran will allow the safe, unhindered, and expeditious passage through the Strait of Hormuz of Philippine-flagged vessels, energy sources, and all Filipino seafarers," the foreign affairs department said in a statement.

Munir has had several meetings with President Donald Trump, including an unprecedented one-on-one lunch at the White House, while the government has apprehended an Islamic State bomber accused of killing American troops and handed him over to the US.

Under the law, passed in parliament on Monday, Palestinians in the occupied West Bank convicted by military courts of carrying out deadly attacks classified as "terrorism" will face the death penalty as a default sentence.

In an evening speech from the White House, Trump broke little new ground on how the war would end and vowed two to three weeks further of "extremely hard" strikes against Iran.

As Israel’s military offensive in Lebanon intensifies, Farizal Rhomadhon’s family in Kulon Progo, Yogyakarta, mourns the sudden loss of the peacekeeper, whose last call with his father ended abruptly before his death.

"We will not pay any toll as what may have been misunderstood by some netizens online. We're not paying anything," Fahmi Fadzil, who is also communications minister, told a regular press conference.

The two countries outlined a joint initiative "for restoring peace and stability in the Gulf and Middle East region", after a visit from senior Pakistani officials to Beijing.

The two peacekeepers with the UNIFIL force were killed on Monday near Bani Hayyan in south Lebanon and two other soldiers were wounded. Another Indonesian soldier was killed overnight Sunday into Monday when a projectile exploded near one of the group's positions.

Two other Indonesian UNIFIL were killed in southern Lebanon on Monday, one day after another peacekeeper died in an explosion amid the intensifying Israeli ground invasion.

The critical waterway has effectively been shut since the US-Israeli war with Iran began on February 28.

Vatican second-in-command Secretary of State Cardinal Pietro Parolin, and its top diplomat, Archbishop Paul R. Gallagher, met with ambassador Yaron Sideman and "regrets were expressed regarding this incident, concerning which clarifications were provided," the Vatican said.

"The safety of peacekeeping troops must be the top priority. All parties to the conflict are urged to respect international humanitarian law and ensure the security of peacekeeping personnel," Defense Ministry spokesman Brig. Gen. Rico Ricardo Sirait said in a statement.

Jakarta has condemned in the strongest terms the Israeli attacks in southern Lebanon that killed three Indonesian peacekeepers, as the border area became another flashpoint in Israel’s war.

Police prevented Cardinal Pierbattista Pizzaballa from entering the church, citing security concerns as Israel enforces a ban on gatherings in synagogues, churches and mosques during the ongoing war with Iran, which has brought missile strikes near holy sites.

"I want to see more certainty in what the objectives of the war are and I want to see a de-escalation," Albanese said, responding to a question about his view on how Trump was prosecuting the war. 

Another peacekeeper was critically injured, it said in a statement early on Monday.

Pakistan said on Sunday it was preparing to host "meaningful talks" to end the conflict over Iran in coming days even though Tehran said it is ready to respond if the United States moves in with soldiers on the ground.

US-Israeli strikes on Iran and Tehran's retaliatory response in the Gulf have sent global oil prices soaring, with Iran maintaining a hold on the vital waterway.

Yemen's Iran-backed Houthi rebels joined the month-old Middle East war, claiming two missile attacks on Israel that raised concern on Sunday about the war spreading to the Red Sea.

Pakistan has conveyed to Tehran a US proposal for ending the war and offered to host talks, with Iranian officials indicating any negotiations could take place in Pakistan or Turkey.

The diplomatic hopes came as US Secretary of State Marco Rubio left G7 talks in Paris to declare Washington expects its military campaign to prove victorious within weeks.

Speaking on national television, Anwar said he spoke with Iranian President Masoud Pezeshkian, as well as Egyptian and Turkish counterparts and other leaders in the Gulf region.

US President Donald Trump said he will extend a pause on attacks against Iran's energy plants into April and that talks with Iran were going "very well," but an Iranian official said a US proposal for ending the war as "one-sided and unfair."

The extensive use of interceptor missiles by the United States, Israel and the Gulf states to counter Iranian retaliatory attacks has raised concerns about stockpile sizes.

The Bangchak Corporation-owned tanker crossed the strategic waterway on Monday after successful talks between Thai foreign minister Sihasak Phuangketkeow and Iran's ambassador to Thailand.