How the U.S. Is Targeting Iran's Oil Money

The U.S. Treasury on September 4 designated a Turkish investment bank and two affiliated firms, saying they played a role in moving Iranian oil revenue and giving Iran-linked actors access to the international financial system. The three Golden Global entities were placed on the Treasury's Specially Designated Nationals list, a step that effectively severs them from U.S. dollar clearing and many correspondent-banking relationships. Treasury also issued a general license to permit orderly wind-down of existing transactions.

Treasury officials alleged Golden Global helped process tens of millions of dollars on behalf of the Islamic Revolutionary Guard Corps-Quds Force and offered correspondent-banking services that allowed Iranian funds to travel internationally. The department said the bank assisted a shadow-banking network that channeled oil proceeds from China into Turkey, where the revenue could be converted into cash and gold. U.S. officials tied some of the activity to accounts and proxies linked to Turkish businessman Sitki Ayan, whose network faced U.S. sanctions in 2022 over IRGC-QF-related oil sales.

Golden Global Yatirim Bankasi rejected the U.S. accusations, asserting it complied with domestic and international banking and compliance rules. Still, Treasury Secretary Scott Bessent characterized the action as part of a stepped-up campaign, Operation Economic Outcast, aimed at financial institutions and other channels that help Iran generate and move revenue. He warned that further measures would depend on whether international institutions continued to support what the Treasury called Iran's regime.

Analysts say the measure is designed as a deterrent: by targeting intermediary hubs rather than only Iran-based entities, Washington hopes to make third-country banks and firms view Iranian business as too risky. Former Treasury sanctions coordinator Andrew Sobotka — now at analytics firm Kharon — said the designation and related steps, such as a proposed 311 action against Banque Misr's UAE branches, should signal U.S. seriousness and push correspondent banks to pressure foreign partners to tighten controls. But sanctions experts including Brett Erickson caution that while de-risking can raise costs for Tehran, it may not by itself collapse Iran's economy, particularly when workarounds and alternative channels remain available.