Zarrab exploited his father’s ties to the Iranian regime to greatly expand his family’s modest money-changing business into a wide-ranging criminal enterprise built on smuggled suitcases full of gold and cash; forged documents; industrial-scale bribery of Turkish politicians; and allegedly using the Turkish state bank Halkbank as a money laundry. Perhaps the Turkish-Iranian businessman thought himself a patriot, helping his people in Iran bring home money trapped in foreign banks by harsh international sanctions. Or perhaps the 8 percent commission was enough of a draw.