The U.S. Department of the Treasury, through the Financial Crimes Enforcement Network (FinCEN), convened a public-private partnership event in Washington, D.C. with 16 systemically important global financial institutions and federal law enforcement agencies focused on denying Iran access to the global financial system. The session launched FinCEN’s “Iran Maximum Pressure and Counter Terrorism” (IMPACT) Exchange series and centred on Iran’s global oil and “shadow banking” networks. Discussions covered challenges in complying with U.S. sanctions on Iran and the ways multi-jurisdictional shadow banking arrangements can provide sanctioned Iranian entities access to the international financial system and obscure trade with foreign customers, with participants sharing best practices and investigative findings. Treasury framed the exchange as supporting implementation of National Security Presidential Memorandum-2 (NSPM-2) and published Treasury Secretary Scott Bessent’s remarks from the event. FinCEN Exchange operates as a voluntary, statutorily authorised public-private partnership that began in 2017 and was codified in the Anti-Money Laundering Act of 2020.