...goods, technology, or services may not be exported, reexported, sold or supplied, directly or indirectly, from the United States or by a U.S. person, wherever located, to Iran or the Government of Iran. The ban on providing services includes any brokering function from the United States or by U.S. persons, wherever located. For example, a U.S. person, wherever located, or any person acting within the United States, may not broker offshore transactions that benefit Iran or the Government of Iran, including sales of foreign goods or arranging for third-country financing or guarantees.
In general, a person may not export from the U.S. any goods, technology or services, if that person knows or has reason to know such items are intended specifically for supply, transshipment or reexportation to Iran. Further, such exportation is prohibited if the exporter knows or has reason to know the U.S. items are intended specifically for use in the production of, for commingling with, or for incorporation into goods, technology or services to be directly or indirectly supplied, transshipped or reexported exclusively or predominately to Iran or the Government of Iran. ...