In the past four years, the rain fell in torrents, Demeke Hafiso’s crops sprouted like clockwork, his three-acre plot filled the stomachs of his nine children – and millions of farmers like him powered the Ethiopian economy to double-digit growth.

This year the rain came too late, he has abandoned his field of dead maize, and is sitting by the bedside of his motionless son in a medical centre run by Médecins Sans Frontières. The 16-year-old’s hollowed-out cheeks betray the starvation that has brought him here.