Ministers from Britain, China, France, Germany and Russian Federation met their Iranian counterpart in Vienna for the first time since U.S. President Donald Trump left a nuclear accord in May, but diplomats had seen limited scope for salvaging it.
Earlier in the day, Zarif said he was in Vienna "to listen to practical solutions, rather than slogans".
The Iranian president described as disappointing the bloc's package of economic measures.
Rouhani, who visited Switzerland and Austria this week to rally support for the nuclear deal's survival, said in a phone call with Macron that the package "does not meet all our demands", Iran's state news agency IRNA reported.
Speaking after three hours of talks, European Union foreign policy chief Federica Mogherini, who chaired the talks, read a statement from the six delegations repeating previously-announced broad priorities ranging from guaranteeing Iranian oil revenue to shipping ties, banking and all other trade and investment co-operation.
"We are ready for all possible scenarios. the collapse of the deal will increase the tension in the region".
VIENNA - Talks to save the 2015 nuclear deal on Friday are unlikely to satisfy Iran, European powers said, and Tehran warned that it could leave the accord if it was not fully compensated for the re-imposition of U.S. sanctions.
But Le Drian also warned Iran to "stop the threats" to withdraw from the deal if it does not receive enough guarantees from Europe.
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Other topics "are a question of time the head of states will decide to allocate for this meeting", he added. The two will meet alone, before being joined by their advisers for an extended.
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. "For August it seems a bit short, but we are trying to do it by November", he said.
Meanwhile, Iran's representative to the Organization of Petroleum Exporting Countries, or OPEC, blamed Trump for rising oil prices, claiming that the president's rhetoric could force oil prices to rise to $100 per barrel.
Trump announced on May 8 that Washington was walking away from the nuclear agreement, which was reached between Iran and the five permanent members of the UN Security Council - the United States, Britain, France, Russia and China - Germany, and the European Union in 2015.
A senior USA military leader said in 2012 the Guards have the ability to block the Strait of Hormuz "for a period of time" but the United States would take action to reopen it in such an event.
Rouhani responds on Jul 3 saying the United States can never prevent Iran from exporting its oil.
But Washington has also warned European allies that they face possible penalties if they violate US sanctions, which Washington says are aimed at reducing Iranian oil exports to "zero" - a level that would deprive Iran's economy of its principal source of revenue and economic growth.
Lavrov urged new ways of trading with Iran if Washington restores sanctions against Tehran. The bank now has a policy of not lending to Iran and other countries listed as high-risk by a global terrorism financing watchdog. We want to keep our journalism open and accessible and be able to keep providing you with news and analyses from the frontlines of Israel, the Middle East and the Jewish World. Further sanctions on oil and transactions with the central bank of Iran will come into effect November 6.