Trump's action has been met with dismay among America's allies in Europe and Asia and with scathing criticism and opprobrium in the USA political circles and the liberal press.
Germany and France joined him in reiterating their commitment to the deal, which restricts Iran's nuclear capabilities in return for the lifting of economic sanctions.
If the United States continues to threaten fines against companies for violating the sanctions, France's Finance Minister Bruno Le Maire said on May 10 that European Union states would propose sanctions-blocking measures to the European Commission to protect their companies.
Another French firm that has a lot to lose in Iran is Total.
In spite of the United States exit, Britain and Iran on Sunday expressed their commitment to ensuring that the accord is upheld, according to a statement released by British Prime Minister Theresa May's office.
In their opening remarks, Lavrov said Russia, Iran and the other signatories of the deal, including China and three European countries, should together "defend their legitimate interest stipulated by this agreement".
"We are working on the measures that we can start to put in place and we will look at the content of that", she said. "At this point", he reportedly declared, "we have to replace the United States, which as an global actor has lost vigor, and because of it, in the long term, [has lost] influence".
"We have no illusions about Iran's disruptive behaviour, but we think we can tackle those in other ways outside the JCPOA".
The Russian foreign ministry has expressed deep disappointment over Trump's "refusal to carry out [America's] commitments" under the 2015 accord.
"Europeans are going to face the effective USA sanctions", Mr. Bolton said on ABC's programme, "This Week". But no word has come from China as yet.
"I want to stress we are under no illusion about the stuff Iran gets up to in the region, in the Middle East". This prospect comes with its own set of complications.
"If the nuclear deal is to continue, the interests of the people of Iran must be assured", Zarif added.
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 United States and Trump should have extended it for at least another six months to work with allies. Military tensions between Iran and Israel have already mounted, and oil prices are rising on the uncertainty.
Calling the accord as an "embarrassment" that was "defective at its core", he also warned of severe consequences if Iran resumes its nuclear programme.
President Trump's withdrawal from the Iran nuclear deal stands to make a bad situation better and forge a U.S. Yet Trump has decided unilaterally to impose "the highest level of economic sanction" on Iran and on "any nation that helps Iran in its quest for nuclear weapons". Washington despises worldwide law.
"Do we want to be vassals who obey decisions taken by the United States while clinging to the hem of their pants?" Instead he is demonstrating to a far more advanced and unpredictable adversary on the eve of negotiations that the (US) can not be trusted. You can count on Russian Federation and China to push back if the USA blackballs their companies for trading with Iran but will the British, French and German governments also do so?