US sanctions against Iran are back in effect

US President Trump signed an executive order on August 5 aimed at piling financial pressure on Tehran to force a "comprehensive and lasting solution" to Iranian threats, including its development of missiles and regional "malign" activities. Trump warned that those who don't wind down their economic ties to Iran "risk severe consequences."

The first phase, which took effect on August 7, targets the Islamic Republic's access to US banknotes, making transactions in a US-dollar dominated financial world difficult. A ban on Iran purchasing precious metals including gold further serves as an attempt to cut the country off from global markets.

Phase one also hits key industries including the purchase of commercial planes, cars and carpets. Iranian imports of graphite, aluminum, steel, coal, gold and some software are also affected. German automaker Daimler called off the production and sale of Mercedes-Benz trucks in Iran indefinitely after the sanctions came into force.

A second phase of sanctions — which is due to take effect on November 5 and will block Iran's oil sales — is due to cause more damage. Several countries, however, including China, India and Turkey have indicated they are not willing to entirely cut their Iranian energy purchases.

Iranian President Hassan Rouhani said that the United States had launched "psychological warfare" against Iran to create division amongst its people. But he insisted that Iran still can rely on its allies China and Russia to keep its oil and banking sectors afloat. He has also demanded compensation for decades of American "intervention" in the Islamic Republic.

European Union foreign policy chief Federica Mogherini said the bloc is encouraging small and medium enterprises to increase their business with Iran. She said Tehran has been compliant with their nuclear-related commitments. The EU issued a "blocking statute" to protect European businesses from the impact of the sanctions.