By Laila Bassam, Parisa Hafezi, Maya Gebeily and Tom Perry

BEIRUT/DUBAI, June 17 (Reuters) - Iran's interim deal with the U.S. looks set to bolster Hezbollah's political and financial hand in Lebanon, with Tehran promising more funding for its ally once cash starts to flow, according to four sources familiar with ties between Tehran and the group.

A cash infusion to Hezbollah could help it recover from heavy wartime losses and deliver a setback to Israel, which dealt the Iran-backed group crushing blows in a 2024 war and has campaigned against sanctions relief for Tehran.

Hezbollah chief Naim Qassem on Wednesday urged Lebanese authorities to take advantage of a "pivotal" moment following a US-Iran deal to end the Middle East war, ahead of Israeli-Lebanese negotiations next week.

American and Iranian officials, as well as mediator Pakistan, have said the deal includes Lebanon, where Israel and Hezbollah have been at war since March 2.

Lebanese President Joseph Aoun instead insisted his country's negotiations with Israel in Washington were independent of the regional deal.

By Olivia Le Poidevin

GENEVA, June 17 (Reuters) - U.N. experts on Wednesday expressed grave concern for two Britons convicted in Iran of espionage who are now on hunger strike in jail.

Craig and Lindsay Foreman were sentenced to 10 years in prison in February on ​espionage charges, which they deny. Their family said a failed appeal hearing this month had been conducted without their knowledge, and they had been given little information about the process.

EVIAN-LES-BAINS, France, June 17 (Reuters) - U.S President Donald Trump said on Wednesday that the memorandum of understanding on Iran was not final, and that he could resume a bombing campaign if he did not like it.

"It's a memorandum of understanding. And if I don't like it, we'll go back to shooting at them, dropping bombs on their head. If I don't like it, if they don't behave, we'll go right back to dropping bombs right smack in the middle of their head, OK?" said Trump, at the G7 summit in France.

Gravediggers in a southern Lebanon village prepare tombs for the dead in Israeli strikes during the latest Israel-Hezbollah war, near those killed in the previous conflicts between the foes.

In front of recent graves bearing three huge portraits in Deir Qanun al-Nahr, Shourouk Hariri, 32, wept for her twin brother and volunteer rescuer Ahmad, one of his colleagues, and her uncle, a local civilian.

US President Donald Trump on Wednesday warned Iran he was ready to resume military action if Tehran did not abide by its obligations, two days ahead of the signing of an accord to end the war between the foes.

"No it's not final. It's a memorandum of understanding," Trump said at the G7, referring to the agreement expected to be signed in Switzerland on Friday.

"If I don't like it we will go back to shooting at them," he added alongside Egyptian President Abdel Fattah al-Sisi.

By Maayan Lubell and Angus McDowall

JERUSALEM, June 17 (Reuters) - Israeli Prime Minister Benjamin Netanyahu's hopes of clinging to power in an election this autumn have long been shaky, but the interim U.S. deal with Iran has added yet another complication.

U.S. President Donald Trump has opted to end the wars in Iran and Lebanon long before Israel's goals were accomplished, and Netanyahu's boast in March that "we are changing the face of the Middle East" looks increasingly empty.

By Steve Holland and Jana Choukeir

EVIAN-LES-BAINS, France/DUBAI, June 17 (Reuters) - Leaders of the G7 countries demanded a ceasefire in Lebanon on Wednesday and said they will diversify energy supply routes to reduce dependence on the Strait of Hormuz in response to the war in Iran, as they welcomed an interim deal to end the conflict.

Canada's Prime Minister Mark Carney on Wednesday said a US-Iran deal to end the Middle East war could be a "game changer" in the region and beyond.

There is "a likelihood that this memorandum of understanding agreement could be a game changer", Carney told reporters on the third day of a G7 leaders' meeting in the French town of Evian.

He pointed to encouraging discussions, which included US President Donald Trump, on Ukraine and Lebanon at the summit.

EVIAN-LES-BAINS, France, June 17 (Reuters) - The United States and U.S. President Donald Trump have pivoted in its view of the war in Ukraine, taking what other G7 leaders thought was a more realistic position regarding the conflict, Canadian Prime Minister Mark Carney said on Wednesday.

Speaking during the G7 summit in Evians-les-Bains, France, Carney said he had seven or eight discussions with U.S. President Donald Trump in the past 36 hours on a wide range of subjects, including Canada's Chinese electric vehicle cap, the structure of which Trump liked.