There have been rumors for some timee now that the Iranian regime has quietly decided to leave the nuclear deal.
— Gregor Peter (@L0gg0l) February 25, 2019
Zarif resignation could be sign that interal efforts to change that have failed. If the case, the corresponding announcement may be imminent
Iranian Foreign Minister Zarif Announces Resignation Via Instagram
[Haaretz] Iranian Foreign Minister Mohammad Javad Zarif stepped down on Monday, announcing his resignation on Instagram. "I am apologizing to you for all the shortcomings ... in the past years during my time as foreign minister ... I thank the Iranian nation and officials," he wrote on his Instagram page jzarif_ir.
Iran's state-run IRNA news agency confirmed the resignation, citing Abbas Mousavi, a government spokesman. There was no immediate reason offered for what prompted Zarif's resignation.
Iran's semi-official Tasnim news agency said "some sources have confirmed Zarif's resignation," but it was not clear whether President Hassan Rohani would accept it.
Zarif played an important role in striking the 2015 nuclear deal between Iran and six world powers. But he came under attack by anti-Western hardliners in Iran after the United States pulled out of the agreement last May and reimposed sanctions that were lifted under the deal.