It was likely the largest sanctions-evasion scheme in modern history, involving top state officials from both Ankara and Tehran. While the U.S. was attempting to use economic pressure in response to revelations regarding Tehran’s illicit nuclear weapons program, Turkish gold trader Reza Zarrab and banker Mehmet Hakan Atilla facilitated an illicit oil-for-gold scheme that enriched Iran to the tune of over $100 billion.

Foreign Podicy host Cliff May is joined by Jonathan Schanzer, Aykan Erdemir and Merve Tahiroglu, who were involved in FDD’s extensive role in the case, to unravel the story and discuss its many implications.