The US Senate has voted to block a war powers resolution directing President Donald Trump to end military hostilities against Iran, the 9th such vote this year and the first since a US-Iran framework deal was announced.

The Senate failed to adopt the motion, led by Democratic Sen. Raphael Warnock of Georgia, by a 47-48 vote.

Four Republicans voted in favour of the measure — Sens. Bill Cassidy of Louisiana, Susan Collins of Maine, Lisa Murkowski of Alaska and Rand Paul of Kentucky — while Democratic Sen. John Fetterman of Pennsylvania was the sole Democrat to vote against it.

Trump lashed out at Netanyahu several times during the last few months, calling him "f***ing crazy and ungrateful".

Drone strikes hit three vehicles in the Nabatieh district, with Israeli attacks continuing despite the ceasefire and recent US agreement with Tehran.

Washington denies Israel's request to review the newly agreed and Pakistan-mediated Memorandum of Understanding ahead of its signing, expected to take place in Switzerland later this week, reports say.

UN Special Envoy for Yemen Hans Grundberg has said that he hopes the recently announced agreement between the US and Iran will mark a "turning point" for the region and create momentum for advancing peace efforts in Yemen.

Addressing the UN Security Council, Grundberg echoed UN Secretary-General Antonio Guterres' message welcoming the deal.

"For nearly three years, regional shockwaves have complicated prospects for the Yemeni peace process, deepening mistrust between the parties and deferring willingness for compromise," he said.

"I hope this deal marks a turning point for the region, and I will be working with the parties to encourage them to seize this moment to make progress on Yemen.”

The UN has said that some displaced Lebanese families have begun “cautiously” returning home following the announcement of a memorandum of understanding between the US and Iran to end hostilities on all fronts, including Lebanon.

UN spokesman Stephane Dujarric told reporters that Lebanese authorities reported the number of displaced in collective shelters dropped by approximately 10,000 in the last four days, from around 134,000 on Friday to roughly 124,000 as of Tuesday, with about 2,700 leaving shelters on Monday.

Dujarric cautioned, however, that "it remains unclear whether these movements represent temporary returns to assess homes and property or more sustained returns."

The United States rejected an Israeli request to review a memorandum of understanding reached with Iran, leaving Israel unaware of the agreement’s full details, Israeli media reported.

Channel 12 said Israeli officials had asked Washington to provide access to the memorandum, but the request was denied.

The broadcaster said Israel “still does not know the full details of the agreement", which is expected to be signed in Switzerland on Friday.

According to the report, US President Donald Trump has pledged to review the document “word by word" but has not specified when its content will be made public.

The channel said no official details of the US-Iran agreement have yet been released. However, it cited Iranian media reports claiming the memorandum contains 14 provisions.

Iranian Central Bank Governor Abdolnasser Hemmati said that provisions related to the release of Iran’s frozen assets under the proposed memorandum of understanding with the United States were designed to ensure access to the funds.

Speaking to Tasnim news agency, Hemmati said lessons from previous agreements and experiences had been taken into account when drafting the asset-release provisions.

He said the memorandum clearly defines US obligations regarding the release of Iranian assets and includes mechanisms intended to make those commitments enforceable.

“Like any international agreement, the final assessment will depend on implementation and the necessary verification process,” Hemmati said.

Despite the falloff in oil prices, analysts warn that market conditions could remain tight for weeks or even months after the end of the conflict.

The United States will allow Iran to immediately sell oil and fuel once a deal is signed later this week, a senior US official said.

The official said Iran's ability to continue selling oil would, however, depend on full compliance with the agreement, including ensuring the free flow of navigation through the Strait of Hormuz and refraining from obtaining a nuclear weapon.