Foreign ministers from Britain, China, France, Germany and Russian Federation will meet their Iranian counterpart in Vienna on Friday for the first time since the United States, an original signatory to the 2015 pact, pulled out of the deal.
She added that the participants will work on the issues such as "the encouragement of further investments in Iran, the protection of economic operators for their investments and other commercial and financial activities in or in relation to Iran, the bringing together of private and public sector experts, the practical support for trade with and investment in Iran, the protection of companies from the extraterritorial effects of United States sanctions".
On May 12 Foreign Minister Mohammad Javad Zarif says Iran is preparing to resume "industrial-scale" uranium enrichment, limited under the accord, unless Europe provides solid guarantees to maintain trade ties reinstated under the deal.
Washington has warned other countries to end trade and investment in Iran and stop buying its oil by early November or face punitive measures.
Rohani told French President Emmanuel Macron in a phone call that the package "does not meet all our demands", the IRNA state news agency reported late on July 5.
"We are ready for all possible scenarios. the collapse of the deal will increase the tension in the region".
USA secondary sanctions on firms dealing with Iran would "snap back" in August for trade in cars and metals and in November for oil and banking transactions, the State Department official says.
"They must stop permanently threatening to break their commitments to the nuclear deal", Le Drian told RTL radio.
The meeting Friday between Iran, Germany, Britain, France, Russia and China will consider proposals for salvaging the 2015 deal, known as the Joint Comprehensive Plan of Action, which is meant to prevent Tehran from developing nuclear weapons.
Under the JCPOA, Iran undertook to put limits on its nuclear program in exchange for the removal of nuclear-related sanctions imposed against Tehran.
Lavrov urged new ways of trading with Iran if Washington restores sanctions against Tehran.
This week, the European Parliament approved a key component of the package, giving the European Investment Bank authority to invest in Iran despite the USA sanctions.
Reuters reports that whether the bank will invest in Iran is in doubt.
"What is important is that we know and we are certain that we want to stay in the deal and we believe that dialogue should continue in peace", she was quoted as saying.
Beyond the European Investment Bank plan, other elements of the European economic package that Rohani criticized as insufficient include a special measure to shield EU companies from the USA sanctions and a proposal for EU governments to make direct money transfers to Iran's central bank to avoid US penalties.
Since Trump's announcement, Iran's rial currency has fallen, prices have risen and the country has been hit by street protests and strikes.
As an original signatory to the deal, the USA - under then-President Barack Obama - also pledged to waive secondary American sanctions as long as Iran continues to abide by the agreement.