Trump's announcement last Tuesday that the United States was exiting the 2015 nuclear accord was met with widespread dismay among its other signatories - China, Russia, France, the Britain and Germany.
"We are on the right path to move forward ..." And if it continued, it would have given Iran extraordinary economic benefits, without any guarantees of Iranian performance.
French President Emmanuel Macron held phone talks with his Russian counterpart Vladimir Putin on Tuesday, and the Kremlin said they had "confirmed Russia and France's commitment to make the deal work".
Accordingly, Iran's President Hassan Rouhani said that Iran would remain in the global nuclear deal in case the country's interests are secured by other parties to the agreement.
Former Defense Secretary Robert Gates said while the Iran deal was "a flawed agreement" because of a lack of unfettered inspections and other problems, leaving the deal isolates the USA and Trump should have extended it for at least another six months to work with allies.
Some good has come out of the Iranian deal, such as Iran sending Russian Federation much of its super-enriched uranium while getting all kinds of natural uranium back, but it was Obama who facilitated the US departure.
The deal's proponents say it is crucial to forestalling a nuclear Iran and preventing wider war in the Middle East.
Zarif arrived in China to meet his Chinese counterpart Wang Yi on Sunday - the first stop on an urgent diplomatic tour to salvage the JCPOA deal. But in an interview aired on the ABC programme This Week, Bolton said, "That's not the policy of the administration".
UK Foreign Secretary Boris Johnson vowed Monday that the UK would consider how to help European firms maintain confidence in doing business in Iran.
French diplomats said they also wanted to assess Iran's intentions in sticking to the deal, but also to see how open it was to serious talks on other Western concerns.
"I'm hopeful in the days and weeks ahead we can come up with a deal that really works, that really protects the world from Iranian bad behavior, not just their nuclear program, but their missiles and their malign behavior as well", he said. The announcement triggered US plans to reimpose sanctions on the Islamic Republic within roughly three to six months.
Mr Khamenei said that while Iranian officials "want to continue the nuclear deal" with Britain, France and Germany, he "did not trust these countries either". In the past, the European Union has also lodged complaints at the World Trade Organisation.
The European Commission has been examining measures to counter the introduction of any USA sanctions that could harm European businesses.
He said: "What we are going to do tomorrow in Brussels is we are going to have a conversation about what we can do to help United Kingdom firms, European firms have some confidence that they can still do business".
He stated: "We have now to simply accept, we now have to be real looking in regards to the electrified rail, the reside wire of American extra-territoriality, and the way that may function a deterrent to companies".
They could consider retaliatory sanctions using the EU's so-called blocking statute that bans any European Union company from complying with USA sanctions and does not recognise any court rulings that enforce American penalties.