U.S. Sanctions Turkish Bank and Two Subsidiaries Over Alleged Iran Financial Network

Treasury blocks a bank in a NATO ally

WASHINGTON — The Treasury Department imposed sanctions Friday on Istanbul-based Golden Global Yatirim Bankasi Anonim Sirketi and two subsidiaries, escalating the Trump administration's economic campaign against Iran with its first designation of a bank in a NATO country under the current operation.

The Office of Foreign Assets Control added Golden Global Bank, Golden Global Portfoy Yonetimi Anonim Sirketi and Golden Global Varlik Kiralama Anonim Sirketi to its Specially Designated Nationals and Blocked Persons List. Treasury designated the parent under Executive Order 13902 and the two subsidiaries as entities it owns or controls.

The sanctions are in force, but the government's account of why it imposed them remains an allegation that the bank disputes. An OFAC designation is an executive-branch administrative action; it is not a criminal conviction, a guilty plea or a judicial finding that every asserted transaction occurred as described.

Read the source: U.S. Treasury: September 4 Golden Global Bank sanctions announcement ↗

What Treasury alleges

Treasury alleges that Golden Global was established to help an Iranian shadow-banking network move oil revenue from China to Türkiye, where money exchangers could convert the proceeds to cash and gold. It says the bank facilitated tens of millions of dollars in transactions involving the Islamic Revolutionary Guard Corps-Qods Force.

The department also alleges that Golden Global knowingly offered correspondent-banking services to Iranian financial institutions and enabled transactions through accounts controlled by the Qods Force and its proxies. Treasury linked its action to a previously sanctioned network involving Turkish businessman Sitki Ayan and his companies.

Those assertions come from the sanctioning authority and are not independently proven merely because they appear in an official release. Treasury did not publish underlying customer records, transaction files or evidence allowing the public to verify every allegation in the announcement.

Read the source: OFAC: Golden Global entities added to the SDN List and General License CC ↗

Golden Global rejects the accusations

Golden Global rejected Treasury's allegations, Reuters reported. The bank said it complies with Turkish and international banking and compliance requirements and plans to pursue its legal rights against what it called unfounded accusations.

The bank also said that the people and entities named in the OFAC decision were not its customers and that it had no direct or indirect dealings with them. That denial is the institution's position; it does not by itself invalidate the designation or establish that Treasury's evidence is wrong.

The dispute now places sharply conflicting accounts in the public record. Responsible coverage must report both while recognizing that only the U.S. designation—not the contested underlying conduct—has been independently confirmed through OFAC's published list update.

Read the source: Reuters: Sanctions scope, first bank in a NATO ally under the campaign and bank denial ↗

What the sanctions immediately do

Property and interests in property belonging to the designated entities that are in the United States or controlled by U.S. persons are blocked and must be reported to OFAC. Companies owned 50% or more by one or more blocked persons are also generally blocked under Treasury's rules.

Unless an exemption or license applies, U.S. persons and transactions within or transiting the United States are generally prohibited from dealing in property or interests in property involving the blocked entities. Reuters described the practical effect as cutting the bank and subsidiaries off from the dollar-based financial system.

OFAC simultaneously issued Iran General License CC to permit a wind-down of certain transactions involving the newly blocked entities. A wind-down license does not cancel the designation; it creates a bounded authorization intended to let covered parties exit specified dealings under the license's terms.

Read the source: Associated Press: Operation Economic Outcast context and limits ↗

What the action does not establish

The designation does not freeze every asset the bank may hold worldwide, close the bank under Turkish law or prove that all of its customers participated in Iran-related transactions. It also does not establish that every foreign institution must immediately stop every interaction without examining applicable U.S. exposure and OFAC rules.

Treasury warns that foreign financial institutions could face secondary-sanctions risk for knowingly conducting or facilitating significant transactions for a designated person. That risk is serious, but exposure depends on the institution, transaction, knowledge and legal authority involved; it is not an automatic public finding against every correspondent bank.

The action also does not demonstrate that Iran will change policy, return to negotiations or lose access to every financial channel. The Associated Press reported that the wider effort has struggled to isolate Iran from major trading partners, while Reuters cited analysts who questioned whether this designation would materially change the war's trajectory.

Read the source: Wikimedia Commons: Treasury Building photograph and CC BY-SA 3.0 license ↗

Why this matters beyond one small bank

Golden Global is a relatively small investment bank, with Reuters reporting approximately 25 billion Turkish lira in 2025 assets. Its broader significance is geographic and strategic: the current campaign has now reached a financial institution inside a NATO ally.

That can raise compliance pressure on banks far larger than the named institution because access to U.S. correspondent accounts and dollar transactions is central to international finance. It also adds a new point of friction to U.S.-Türkiye relations while Washington is already combining sanctions, military strikes and restrictions on Iran-linked shipping.

Sanctions should be measured by verified outcomes, not slogans. The next evidence to watch is whether other banks reduce exposure, whether Golden Global petitions for removal or challenges the action, whether Turkish authorities respond and whether Treasury produces further designations or public evidence.

About the image

The accompanying image is an authentic 2012 photograph of the United States Treasury Building in Washington, D.C., taken by Wikimedia Commons contributor Rchuon24. It does not show Golden Global Bank, Türkiye, Iran, a transaction or Friday's sanctions action.

The photographer released the image under the Creative Commons Attribution-ShareAlike 3.0 license. Its use provides real-world context for the agency that issued the designation and does not imply endorsement by the photographer, Wikimedia Commons or the Treasury Department.