Every Saturday, we revisit a story from the archives. This originally aired on December 7, 2020. None of the dates, titles, or other references from that time have been changed.  Many Iranians had no idea who Mohsen Fakhrizadeh was when he was assassinated at the end of November 2020. But intelligence services in Israel and the United States had been tracking Iran’s top nuclear scientist for years. So what happened that day, and what will it mean for Iran? We are exploring Fakhrizadeh’s story and the future of US-Iran relations. In this episode:  Maziar Motamedi, Al Jazeera journalist in Tehran, Iran. Episode credits: This episode was updated by Amy Walters. The original production team was Amy Walters with our host, Malika Bilal Our sound designer is Alex Roldan. Our lead of audience development and engagement is Aya Elmileik. Adam Abou-Gad is our engagement producer. Alexandra Locke is The Take’s executive producer, and Ney Alvarez is Al Jazeera’s head of audio. Connect with us: @AJEPodcasts on Twitter, Instagram, Facebook, Threads and YouTube