President Donald Trumpwithdrew from the nuclear deal, formally known as the Joint Comprehensive Plan of Action, earlier this year.
"Mogherini and the European ministers ... highlighted the importance of the finance ministers' commitment to Europe's financial mechanism to save the Iran nuclear deal and said the mechanism will be operational in the coming days", IRNA said.
TankerTrackers says there are now six vessels, with a total of 11 million barrels of capacity, parked offshore as floating storage containers - freeing up port capacity and allowing for quick deliveries.
"And that's another reason why I think we're going to find it's hard to see them really joining even if their companies are no longer within Iran", he added.
Despite a long line of reports that Iran's economy has suffered deeply from the August sanctions and from anticipation of Sunday's escalated sanctions, Seener said that the fundamental dynamics protecting Iran from a total collapse if anything are even more solid.
The United States says the sanctions are not aimed at toppling the government, but at persuading it to radically change its policies, including its support for regional militant groups and its development of long-range ballistic missiles.
On Friday, the USA said it would add 700 individuals and entities to its Iran blacklist and push the SWIFT global banking network to cut off Tehran as Washington applies "maximum pressure" to cripple the country's economy. "But, as you know, sanctions are starting on Iran and, Iran is taking a very big hit", he said.
India is on the list, United States officials have indicated. It did not name the countries which would benefit.
During the last sanctions period, China funnelled nearly all its Iranian transactions through the Bank of Kunlun, controlled by Chinese state energy group CNPC, which was sanctioned by the USA in 2012 but shielded the rest of the sector from penalties.
Meanwhile, Iranian state television reported that the Islamic Republic had started production of the locally-designed Kowsar fighter plane for use in its air force.
Vice President Mike Pence, for his part, said, "Iran will be under the most punitive sanctions they have ever faced".
The United States believes global oil supplies will exceed demand next year, making it easier for countries to cut Iranian oil imports to zero, Brian Hook, the US special representative for Iran, told reporters.
The US has made it clear it wants eventually to cut off Iran's oil trade entirely, but has allowed eight countries to maintain imports as a temporary concession to give them time to reduce imports. The European Union will not be granted an exemption, Pompeo said.
The "US addiction to sanctions is out of control", Zarif wrote on Twitter.
The report discusses an unsealed indictment in the United States which "provides detail on Iran's use of deceptive practices to procure export controlled items with military applications from the USA and elsewhere".
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