U.S. diplomat looks to market Iran deal to wary firms DUBAI, United Arab Emirates — Two months after the implementation of last year’s landmark nuclear agreement, a U.S. diplomat is on an unlikely mission — promoting the Iran deal to firms that want to tap into its massive market but fear other sanctions, or that the next American president could scrap the deal. It’s not an easy task for Chris Backemeyer or other Americans on the equivalent of a nuclear deal roadshow, especially as Iran’s Revolutionary Guard continues to fire off ballistic missiles and U.S.