What we know about Iran's new supreme leader, Mojtaba Khamenei

Kasra Aarabi, head of researching ​the IRGC at United Against Nuclear Iran, a U.S.-based policy organization, said Khamenei has a "strong constituency and ​support" within the IRGC and younger radical supporters of the regime. Aarabi said Khamenei has amassed much influence acting as a gatekeeper to his father, describing him as a "mini supreme leader."