The U.S. Treasury Department issued new guidance on October 7 that eased restrictions on Iran's ability to trade in dollars and on the ability of foreign companies to do business with Iranian entities sanctioned by the United States.  According to the new guidance, the United States will not necessarily sanction foreign firms for conducting transactions with companies owned or controlled by blacklisted Iranian entities, provided the sanctioned entity is not the controlling stakeholder.  The new guidance also clarifies that Iran can access dollars through non-U.S. financial institutions, as long as those transactions do not transit the U.S. financial system.