The Intelligence Ministry said that the return of so-called snapback sanctions will include a ban on arms sales, freezing of assets and foreign currency accounts of companies abroad.
“Re-sanctioning of legal and natural persons active in industries such as oil, petrochemicals, banking, shipping, insurance and sensitive technologies will be activated,” the document said.
Potential fallout could roil markets and exacerbate unemployment and deepen popular discontent, the ministry added.
“Severe currency fluctuations, reduced purchasing power, increased unemployment, layoffs and heightened social discontent are to be expected,” the Intelligence Ministry said.
The snapback mechanism is part of UN Security Council Resolution 2231, which endorsed a 2015 deal over Iran's disputed nuclear program called the Joint Comprehensive Plan of Action (JCPOA).
Under Resolution 2231, any party to the accord can file a complaint accusing Iran of non-compliance. If no agreement is reached within 30 days to maintain sanctions relief, all previous UN sanctions would automatically “snap back,” including arms embargoes, cargo inspections and missile restrictions.
Iran’s Intelligence Ministry also pointed to potential alternative partners for the Islamic Republic to evade the sanctions.
“Identify alternative suppliers in countries like China, Russia, Iraq, etc., which will be less affected by sanctions,” the statement said.
The guidance also warned of renewed threats to national security including cyberattacks on critical infrastructure.
“Increased targeted cyberattacks on economic infrastructure, focusing on supply chains, automation, and financial management, as well as efforts by foreign intelligence services to infiltrate through third parties, contractors, or organizational applications, will be some of the threats,” the statement said.
France, the United Kingdom and Germany told Iran they would restore UN sanctions unless it reopened talks on its nuclear program immediately and produced concrete results by the end of August.
Iranian diplomates last met representatives of the three European countries in Istanbul on July 25.
Iran’s Foreign Ministry spokesman Esmail Baghaei described the meeting with Britain, France and Germany as a “test of realism” for the E3 powers, calling it a chance for them to correct past positions.