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Siamak Namazi has been in prison in Iran for more than seven years. He's a dual US-Iranian citizen; one of three to be held inside Evin prison. He made an emotional appeal to President Biden to secure his release in a telephone interview with CNN's Christiane Amanpour. He shared his anguish over how he feels he's been treated by successive US administrations.

The ³ÉÈË¿ìÊÖ's Tim Franks spoke to his brother, Babak, and asked him what he took from Siamak's words.