Treasury targets Turkey-based bank with new sanctions over its ties to Iran

# Analysis The Treasury's escalating sanctions against Turkish intermediaries marks a significant shift in how the U.S. is enforcing its Iran policy—by targeting the financial networks that circumvent existing restrictions rather than just Iranian entities themselves. By publicly sanctioning Turkish banks, Washington is forcing a direct choice between access to the U.S. financial system and Iran business, effectively narrowing the gray market that has allowed Turkey to maintain profitable trade with Tehran while preserving NATO ties with Washington. This approach could substantially reduce Iran's ability to monetize its oil and gas exports, directly impacting government revenue and potentially accelerating inflation and currency depreciation that destabilizes the Iranian economy. However, the strategy also risks deepening Turkish resentment toward U.S. policy and creating friction within NATO at a moment when alliance cohesion matters strategically, particularly given Turkey's geographic proximity to both Iran and Russia.