Four years ago, Richard Ratcliffe’s wife was arrested and detained in an Iranian prison, charged with spying - which Nazanin has always denied.Ever since then, her devoted husband has campaigned tirelessly for her release.Richard has met with the foreign secretary, given countless interviews to the media and held hunger strikes outside the Iranian embassy in London.But just as the end of her sentence draws close, new charges were brought against the mother-of-one. Could this scupper the chance of the couple being reunited anytime soon?On this edition of the Sky News Daily podcast, Richard speaks to our diplomatic editor Dominic Waghorn about what the past four years has been like for him and their young daughter Gabriella, how Nazanin is coping and reminisces over when they first met.Daily podcast team:Podcast producer - Annie JoycePodcast producer - Nicola EyersPodcast producer - Emma Rae WoodhouseInterviews producer - Oli FosterArchive - Simon WindsorMusic - Steven Wheeler