Shamkhani is an old-guard military figure who served as the secretary of Iran’s Supreme National Security Council until last year. In that role, he oversaw negotiations to mend relations with Saudi Arabia. This background lends credibility to reports that Khamenei has chosen him to handle the nuclear issue, prompting significant reactions.
On Tuesday, however, several Iran-based news websites rehashed an interview from two weeks ago, in which Mahmoud Vaezi, the chief of staff to former President Hassan Rouhani, suggests Shamkhani was against the idea of reviving the JCPOA nuclear agreement, after it was ditched by Donald Trump.
"[Iran’s] Supreme National Security Council Secretariat during Shamkhani's term took a line of non-revival,” Vaezi says in his interview. “If the secretariat had been aligned [with Rouhani’s administration], the nuclear deal would have been revived at that time."
The reason why some outlets in Iran have highlighted this line from Vaezi’s interview remains unclear. It could be an effort by those in favor of a deal—and closer cooperation with the US in general—to undermine Shamkhani before his official announcement in the new role. Alternatively, if the appointment is already finalized, it might be an attempt to put Shamkhani on the defensive from the start. Either way, this appears to be another instance of factional politics that ultimately reinforces Khamenei's position as the ultimate arbiter.