This week there were riots in Iran over currency problems and Turkey authorized military action against Syria.
But with banking restrictions, high inflation, and the plunging value of Iran's currency, many drugs are costly and hard to find in Iran.
Iran's oil exports have plummeted more than 50% as has the value of the rial, Iran's currency.
Iran's currency dropped 12% against the US dollar after the US unveiled fresh sanctions targeting its central bank.
BBC: Iran's rial slides against US dollar on fresh sanctions
Iran's currency, the rial, is also believed to have lost 80% of its value against the dollar since the start of the year.
The value of Iran's currency, the rial, has fallen by nearly 50% against the dollar in the past month on the black market.
Iran's currency, the Rial, is also believed to have lost 80% of its value against the dollar since the beginning of 2012, making imports prohibitively expensive.
Mr. Brown says Iran's plunging currency has made it harder for customers to pay.
With rising import prices due to a plummeting currency, Iran Inc. is also no longer able to compete.
Revenues: The primary source of hard currency for Iran is the export of oil and natural gas.
This is a hot button issue in Iran, where the currency due to sanctions has dropped 80 percent from its peak in 2011.
Foreign currency which Iran used to receive for its oil and gas exports has also dried up in the wake of an EU-wide embargo.
In the 1980s when Iran's foreign currency reserves dried up, licensed exchange bureaux closed down and the black market was run by the street money-changers of Tehran's Ferdowsi Street.
The currency collapse in Iran means that Iranian business can't afford to place their normal orders from Turkey.
BBC: Iran currency plunge bites into border trade with Turkey
Couriers using hand luggage carry the bullion to Dubai, where it is sold for foreign currency or shipped to Iran.
That underscores the likelihood that with dwindling access to the global financial system, and an EU oil embargo looming, Iran will turn oil into its currency.
It seems that a door has been opened to rebuild the US-Brazilian relations that had in recent years become strained over a number of issues, ranging from Iran's nuclear ambitions to currency imbalances.
The sanctions are preventing Iran from getting hold of the hard currency it needs to defend its peg, among other things.
ECONOMIST: America is using the dollar to hurt Iran. Will it work?
On Thursday, Iran's central bank devalued the rial by 8% against the dollar and ordered all currency-exchange shops to adhere to the official rate or be shut down, according to Iran's official media.
It managed to hold the 200 day moving average and with continued tension with Iran it is being looked at as a safe haven currency again.
There was also protesting in Iran this week due to the severe devaluation of the Iranian currency recently.
FORBES: P.M. Kitco Metals Roundup: Gold Ends Higher, Hits 7-Mo. High; Bulls in Firm Command
Several rounds of sanctions have squeezed Iran's economy, with oil revenue slashed, the currency nose-diving in value and unemployment growing.
Several rounds of sanctions have squeezed Iran's economy, with oil revenue slashed, a currency that has nosedived in value, and growing unemployment.
An Iranian embargo of its own oil exports would complete the ruin of Iran's domestic economy by depriving the country of hard currency.
Mr Amin said it was getting impossible to sell his goods back home in Iran because, as a result of the sanctions, the currency there is constantly losing value.
Sanctions against Iran's oil industry have left the country short on foreign currency reserves.
Iranian Ambassador Seyed Nehdi Babizedeh confirmed Iran had opened accounts in Indian banks to process the payments in Indian currency.
Existing sanctions are already causing difficulties for Iran's economy, as evidenced by the collapse in the value of its currency.
This, plus the EU embargo on Iranian oil which started in July, have cut Iran's oil income by at least 45%, hence the current crisis in hard currency.
So long as they buy dollars, and use dollars as a base to sell crude oil from Iran to China, or sugar from Brazil to Russia, then the dollar will remain the most important currency on the planet.
应用推荐