Will US sanctions spark turmoil in Iran?
If the US was hoping renewed sanctions on Iran would cause immediate economic turmoil and mass anti-government protests, it may be disappointed, though real pain could still be on the horizon.
US President Donald Trump described the embargoes that returned on Tuesday as "the most biting sanctions ever imposed".
That was already an exaggeration since they only reimposed measures that were in place before the 2015 nuclear deal which he abandoned in May.
His national security advisor, John Bolton, said Iran's leaders were already "on very shaky ground" after days of protests across the country against high prices and the lack of political reform.
But while there is plenty of despair in Iran over the state of the economy, and fear for the future, the return of sanctions were marked by relative calm.
A large-scale security deployment and mobile internet blackouts certainly played a role, and getting a clear picture of the situation outside Tehran is almost impossible due to heavy reporting restrictions.
But the chatter on social media indicated at least a lull in the protests, while analysts said the idea that economic pain could lead to a full-blown revolution was far-fetched.
"Western observers are often quick to erroneously assume that localised demonstrations... are wholesale rejections of the Islamic republic," said Henry Rome of the Eurasia Group in a briefing note.
"Despite a rise in public protests, the regime does not yet face an existential threat. The security forces are brutal, efficient, and loyal."
Moreover, there was actually some good economic news this week for once, with the rial gaining more than 20% since Sunday in response to new foreign exchange policies announced by the government.
That points to the fact that Iran's problems are driven at least as much by internal dynamics as US pressure.
Trump's aggressive rhetoric certainly helped fuel the run on the rial, which has lost half its value since April.
But it also resulted from Iran's disastrous decision that month to fix the value of the rial and shut down currency traders, triggering a boom in the black market - moves that have finally been reversed.
"The government was late in its decision-making, but it is the right move," said Mohammad Reza Najafi Manesh, head of the business commission of the Tehran chamber of commerce.
He said sanctions were secondary to dealing with Iran's internal problems, and his chamber was in meetings with the government on Wednesday pushing for additional support such as subsidised imports of raw materials.
"It's not our first time dealing with sanctions. We know how to search for solutions, and we will do our best to meet our needs locally," said Najafi Manesh.
There are real losses from the sanctions. Big European firms like Total, Siemens and Peugeot have already pulled out before their investments could bear fruit.
In November, the second wave of sanctions will hit Iran's vital oil sector, as well as shipping and financial transactions.
"November is when the hammer drops: A serious chunk of oil export revenue will evaporate, and Iranian banks will likely find themselves cut loose from much of the international banking system," Rome said, adding that Eurasia Group expected Iran to lose sales of 700,000 barrels of oil a day.
Many doubt whether President Hassan Rouhani can respond effectively, given his failure to address many long-standing problems around unemployment, corruption and the sclerotic banking sector.
Parliament has summoned him to demand answers, and on Wednesday impeached his labour minister Ali Rabiei.
"The economic section of Rouhani's team is the weakest part of the government. Everyone knows this, but he never changed his direction because they are his allies," said Mohammad Reza Behzadian, a former head of the chamber of commerce.
Others say the US hostility could actually be an opportunity, already prompting signs of a corruption crackdown, including the arrest of the central bank forex chief.
And while much attention has been focused on European efforts to resist US sanctions, the more crucial decisions are likely to be taken elsewhere.
Figures collated by economist Faezeh Foroutan, and published by analyst James Dorsey, showed China alone accounted for 25.6% of Iran's imports and 19.7% of its exports since March - more than all European countries combined.
China, India and Turkey have already said they will not significantly cut their oil purchases from Iran.
Tehran hopes that Trump lacks the international goodwill enjoyed by his predecessor Barack Obama to make sanctions stick.
"There is a big difference this time: before nobody supported Iran. But now, all the countries in the world are supporting Iran," Foreign Minister Mohammad Javad Zarif told reporters on Wednesday.
"America has zig-zagged constantly, so now no one trusts them."