An unhappily married couple break up in this complex, painful, fascinating Iranian drama by writer-director Asghar Farhadi, with explosive results that expose a network of personal and social faultlines. A Separation is a portrait of a fractured relationship and an examination of theocracy, domestic rule and the politics of sex and class – and it reveals a terrible, pervasive sadness that seems to well up through the asphalt and the brickwork. Winner of the 2012 Oscar for best foreign film; A Separation is a landmark film, which many viewers will not be able to get out of their heads