Based on that formula, buyers will ask for a six-month exemption from USA penalties in exchange for reducing the amount of crude purchased from Iran by 20 percent every six months. But they warned there was a risk that deteriorating conditions in Iran would push prices to $100, a level not seen since 2014.
The global oil market is finely balanced, with top exporter Saudi Arabia and No.1 producer Russian Federation having led efforts to curb oil supply to prop up prices.
"A large part of the price slide, which saw [Brent] plunge from over $100 to below $30 a barrel as a result of the price war between OPEC and the US shale oil industry that began in autumn 2014, has now been reversed", the analysts wrote in a note.
Mr Le Maire has put forward counter-proposals including an EU-wide blocking statute that is created to nullify any U.S. sanctions put on European Union firms. It is a particularly sensitive time for South Korea, which is deeply concerned with avoiding any friction with Washington in the midst of ongoing negotiations with North Korea. "Will the US punish countries or companies who keep ties with Iran?"
Iran said it may resume uranium enrichment in a higher rate in weeks if it finds nuclear deal will not work anymore after the USA pullout from the deal. That's about 1 million barrels a day more than in early 2016.
In a Twitter post on Saturday, Trump said the nuclear deal helped Iran to boost its military budget.
Later, India, Iran and Afghanistan signed a trilateral pact providing for transport of goods among the three countries through the port.
"Waivers seem a sensible course of action", the third source said, referring to potential exemptions from the latest USA sanctions.
Before leaving, Zarif published a government statement on his Twitter page, slamming the "extremist administration" of US President Donald Trump for abandoning "an accord recognised as a victory of diplomacy by the worldwide community".
The oil price is broadly higher, with Brent Crude at around $77.33 per barrel, while the price of WTI crude is $71.40, per barrel. But because the European Union and other intentional players have chose to stick with the deal, USA sanctions are likely to affect only up to around 350,000 barrels a day, once reinstated within six months' time, according to analysts at MUFG Bank.
"We're doing nothing", said the head of trading at another European refiner.
Iranian crude oil shipments to Japan and South Korea have fallen by half from their post-sanction peak in March 2017, hitting just over 300,000 bpd in April, according to ship tracking data from Thomson Reuters Eikon.
Reimposition sanctions on Iran will likely have consequences that go against the stated objectives of the Trump administration.
In fact, the worry that the increase in oil prices could lead to higher inflation has impacted the Treasury yields.
The withdrawal also reinforced the anti-American hostility of Ayatollah Ali Khamenei, Iran's supreme leader, who reluctantly had gone along with Mr. Rouhani and his nuclear negotiators. Saudi Arabia would resolve any price spike by adding barrels back onto the market.
Saudi Arabia, on the other hand, could.
Tehran is not the focus of any long-term concerns by Boeing about the Trump administration's foreign policy anyway.
Unlike 2012, the United States is entering these sanctions alone, and this means that it has less control over their efficacy.
She acknowledged it is uncertain "to what extent we can keep this [nuclear] agreement alive if a giant economic power doesn't join in".