However, at least 10 major multinational firms, including Total SA and Peugeot, have already committed to leaving Iran due to USA pressure.
Secretary of State Mike Pompeo says renewed USA sanctions on Iran will be rigorously enforced and remain in place until the Iranian government radically changes course.
Washington has threatened a "maximum pressure" campaign against Iran, calling on USA allies to curb Iranian business dealings-indeed, the U.S. this week rejected an European Union bid for sanction exemptions.
U.S. Secretary of State Mike Pompeo, center, talks with Indonesian President Joko Widodo, unseen, during their meeting at Merdeka palace in Jakarta, Indonesia, Sunday, Aug. 5, 2018. Trump wrote on Twitter late Saturday.
The president also issued an all-caps threat to Iranian President Hassan Rouhani last month, warning him not to threaten the USA or "YOU WILL SUFFER CONSEQUENCES THE LIKES OF WHICH FEW THROUGHOUT HISTORY HAVE EVER SUFFERED BEFORE".
"You will take to the grave the dream of Iranian officials asking you for a meeting or getting the permission to meet you from their nation".
But, while the circumspect approach mirrors Trump's "maximum pressure" campaign that helped force North Korea and China to change their tunes, this time he's opened with an offer for a summit.
For other matters, Switzerland is the nation that officially represents US interests in Iran since the USA cut off all ties after the 1979 Iranian revolution.
On Friday, China said it will not cut Iranian oil imports despite President Trump threatening to sanction any countries that fail to stop importing Iranian oil by November 4, a symbolic date coinciding with the start of what became known as the Iranian hostage crisis.
Google reportedly developing censored version of its search engine for China
This has very serious implications not just for China, but for all of us, for freedom of information and internet freedom. Google has demonstrated the app to officials from the Chinese government, according to The Intercept and the Times .
Nevertheless, Iranians have been demonstrating since December 2017 against the high cost of living and the systematic corruption within the system.
"He's assuming that if he talks tough, that will bolster the credibility of American military power", Dubowitz said.
After months of fierce rhetoric, Trump surprised observers last week when he offered to meet with Rouhani without preconditions.
"I would certainly meet with Iran if they wanted to meet", Trump said.
"Iran, and its economy, is going very bad, and fast!" he added. "There's no evidence to date of their desire to change to change their behaviour".
Other figures in Iran's government dismissed the idea as non starter, saying the nuclear deal represented the talks they supported, and having that ripped up made future conversations untenable.
The exercise could shut down of the Strait of Hormuz, a crucial Gulf passage for shipments of numerous commodities.
"I think (the Trump administration) would be pleased with any one of those end states", Dubowitz said.