FILE - In this Feb. 11, 2019 file photo, Iranian Revolutionary Guard members attend a ceremony celebrating the 40th anniversary of the Islamic Revolution, at the Azadi, or Freedom, Square in Tehran, Iran. The Trump administration on Wednesday granted important exemptions to new sanctions on Iran’s Revolutionary Guard, watering down the effects of the measures while also eliminating an aspect that would have complicated U.S. foreign policy efforts.  (AP Photo/Vahid Salemi)
Iranian Revolutionary Guard Corps members celebrating the 40th anniversary of the Islamic Revolution in Tehran. Vahid Salemi / AP

As the economic net tightens, Tehran is becoming ever more fractious