Mr. X is the first point man the US has headhunted in the ruling elite of post-revolutionary Islamic Iran. Close to Ali Khamenei and Hassan Rouhani, he is the object of high expectations on the part of Barack Obama and John Kerry. The last DEBKA Weekly out Friday, Dec. 20 divulged his arcane identity, his mode of operation and his prospects of meeting those expectations. This issue also traced the slow demise of the nuclear deal the six powers signed with Iran last month. To catch such exclusives, subscribe to DEBKA Weekly by clicking here.