US Treasury warns foreign banks of unannounced sanctions over Iran dealings
The US Treasury warned that foreign financial institutions dealing with sanctioned Iranian banks could face sanctions without advance notice. Its alert also covers services to Iranian branches and subsidiaries in third countries. Restrictions could reach accounts connecting foreign banks to US banking services, while transactions involving US persons may also attract enforcement penalties.
Geopolitics··Morning
Foreign banks face sanctions without advance notice
The US Treasury Department issued an alert on 5 October warning foreign financial institutions that continue to transact with sanctioned Iranian banks that they could be targeted without advance notification. The Office of Foreign Assets Control, the Treasury unit administering sanctions and known as OFAC, urged institutions to end those activities and relationships immediately. The warning was issued under Operation Economic Outcast, Washington’s campaign to restrict Iran’s financial access. It describes possible enforcement against foreign institutions rather than announcing a new designation of a particular foreign bank that day.[1], [2]
Third-country branches fall within the warning
Treasury says financial services supplied to Iranian banks can facilitate Iran’s access to the global financial system. Its alert explicitly includes Iranian banks’ subsidiaries and branches in third countries. Foreign institutions providing those services risk sanctions for operating in, or supporting, sanctioned sectors of Iran’s economy, according to the department. The stated exposure therefore extends to banks outside Iran that maintain these relationships. Treasury also warned of civil and criminal enforcement penalties if sanctions are violated through Iran-related transactions involving US financial institutions or other US persons.[1], [2]
US banking access is among the possible restrictions
Possible restrictions include prohibiting a foreign financial institution from opening or maintaining US correspondent or payable-through accounts. Those accounts provide a connection to banking services in the United States. Treasury presented such limits as strict conditions that could be imposed for sanctioned activity. This account-level measure sits alongside the separate warning about penalties for transactions that involve US persons in breaches of sanctions.[1], [2]
The October alert follows earlier steps under the same campaign. Treasury says it cut US correspondent banking access for Banque Misr UAE in August, designated Türkiye-based Golden Global Bank and its subsidiaries in September, and later designated VTB Bank for alleged Iranian sanctions evasion. The notice describes these earlier actions as part of its effort to disrupt banking links that it says enable Iranian funds to move internationally.[1]
