Trump Defends Iran Nuclear Deal Framework, Suggests Syria Disarm Hezbollah

US President Donald Trump is maintaining that an interim accord with Iran makes clear that Tehran would never be allowed to develop a nuclear weapon, and he also suggested Syria could be better positioned to disarm Iran-backed Hezbollah.

Speaking ahead of talks with Qatar's Emir Sheikh ​Tamim bin ‌Hamad Al Thani on the sidelines of the G7 summit in France, Mr Trump defended the 14-point memorandum of understanding with Iran that has yet to be made public.

"The only thing that really matters to me is Iran will never have a nuclear weapon, and it says it loud and clear," he said, warning that "all hell will rain down" on Iran if it sought to acquire one.

Talks in Switzerland

US and Iranian officials are due in Switzerland on Friday to begin detailed negotiations, opening a 60-day window for complex technical talks.

These are expected to cover issues such as the future of Iran's highly enriched uranium and the lifting of sanctions.

European allies have voiced concern that an inexperienced US negotiating team could struggle to secure a robust agreement, potentially leading to a prolonged stand-off.

In 2015, former US president Barack Obama secured a nuclear deal with Iran in exchange for sanctions relief, a process that took two years to finalise.

Mr Trump withdrew the US from that accord during his first term.

"This deal is a wall to a nuclear weapon. His (Obama) deal was a road to a nuclear weapon. My deal, they can't have a nuclear, they get blown up," Mr Trump said.

Diplomats and analysts noted that Iranian negotiators are highly skilled in nuclear diplomacy, often exploiting weaknesses in their counterparts and buying time to advance their agenda, making the prospect of a comprehensive agreement within 60 days challenging.

Lebanon situation remains unclear

One key factor in whether the interim accord holds will be the situation in Lebanon, where Israeli Prime Minister Benjamin Netanyahu ‌has said his troops would remain in the south as long as needed to tackle Hezbollah.

Tehran has demanded an Israeli withdrawal.

Mr Trump appeared critical of Israel's strategy in Lebanon and also suggested that neighbouring Syria — which, under President Ahmed al-Sharaa, is struggling to stabilise the country after years of civil war — could be best placed to intervene.

"I suggested to Israel to let Syria take care of Hezbollah because to be honest, I think they do a better job of doing it," he said.

Mr Trump said he was "not happy" with the way Israel had handled itself in Lebanon as he was trying to reach a deal with Iran.

And, Mr Trump said that he has a great relationship with Mr Netanyahu, but that he must be more responsible with respect to Lebanon.

The US president dismissed claims of a $US300 billion ($420 billion) fund to rebuild Iran as a "rumour"

The US is "not investing any money in Iran", Mr Trump said.

"That rumour got out there yesterday, it was ridiculous.

"We have no obligation to invest any money in Iran."

The president made the comment a day after senior US officials told reporters that a memorandum of understanding includes a $US300 billion fund to help rebuild if Tehran meets certain benchmarks.

UK ready to help reopen Strait of Hormuz

The UK will "play our full part" in reopening the Strait of Hormuz, Prime Minister Keir Starmer said, although he declined to confirm when British warships could be in the area.

Speaking at the G7 summit, he said leaders of the group of wealthy nations were discussing next steps to reopen the strait.

Britain and France have assembled a group of countries that Mr Starmer said are "prepared to play their part in terms of reassurance to get vessels through the strait".