“You don’t have to be the target to get hit.” Secondary sanctions are penalties imposed on third-country individuals, companies, or governments that conduct transactions with a primary sanctions target — even when they have no U.S. nexus.
Executive Summary
Secondary sanctions represent one of the most legally aggressive and diplomatically contentious instruments in the U.S. sanctions toolkit. Unlike primary sanctions, which restrict U.S. persons and entities from dealing with a target, secondary sanctions reach outward to penalize foreign actors who have committed no offense against U.S. law but who choose to transact with a sanctioned party. Their use has expanded dramatically since 2022, with OFAC designating hundreds of Turkish, Chinese, Emirati, and Indian entities for facilitating Russian sanctions evasion. The EU, which has historically objected to U.S. extraterritorial reach, has itself begun deploying secondary sanction-style tools.
The Strategic Mechanism
Secondary sanctions function through the threat of exclusion from U.S. markets and the dollar system — a threat so economically costly that most large multinationals comply regardless of their country of incorporation:
- Correspondent banking cutoff: A non-U.S. bank that processes transactions for a sanctioned entity risks losing its U.S. correspondent banking relationships, effectively cutting it off from dollar clearing
- SDN list placement: Companies designated to OFAC’s Specially Designated Nationals list are frozen out of the U.S. financial system; secondary sanctions extend this threat to their trading partners
- Sectoral trigger statutes: Laws such as CAATSA (Countering America’s Adversaries Through Sanctions Act) require sanctions on foreign persons engaging in significant transactions with Russia’s defense or intelligence sectors
- Extraterritorial reach: The Foreign Direct Product Rule and secondary sanctions together give the U.S. leverage over foreign companies using no U.S. inputs but operating in dollar-denominated markets
Market & Policy Impact
- Chinese banks and financial institutions have repeatedly curtailed Russia-linked business after OFAC warnings, demonstrating secondary sanctions’ reach into Beijing’s financial sector
- UAE, Turkey, and Kazakhstan became critical transit hubs for sanctioned Russian goods; all faced waves of secondary sanctions designations in 2023–2025
- EU member states have faced diplomatic tension with Washington over extraterritorial application to European companies
- Secondary sanctions are a key driver of de-risking behavior in global correspondent banking, reducing financial access to emerging markets
- The threat alone — not just the imposition — shapes corporate behavior; compliance departments treat secondary sanctions as a systemic risk variable
Modern Case Study: OFAC’s Crackdown on Russian Evasion Networks, 2023–2025
As Russia developed workarounds to primary sanctions through third-country intermediaries, OFAC launched successive waves of secondary sanctions targeting the facilitation networks. In late 2023 and through 2024, hundreds of entities in China, Turkey, the UAE, Armenia, Kazakhstan, and Serbia were designated for supplying dual-use goods or processing financial transactions linked to Russia’s war economy. Several mid-sized Chinese banks curtailed Russia-related business after receiving OFAC warnings, demonstrating that even firms with minimal U.S. exposure bend to secondary sanctions pressure when dollar system access is at stake. The campaign confirmed secondary sanctions as the enforcement backbone of the Russia sanctions regime — and as a preview of how U.S. financial power would be deployed in any future conflict involving China.