"He said to her: 'You're no longer my sister', and she told him to go to hell." This argument between a man and his sister in a city near Tehran - witnessed and recounted by one of their relatives - gives a telling insight into the painful rows erupting among families and friends as US and Israeli strikes continue. The relative, who we are calling Sina, says that when his family recently got together at his grandmother's house, emotions quickly exploded, exposing stark divisions. His uncle, a