In a world where threats to our well-being thrive, and responses to them increasingly take on extreme forms, how are we supposed to recognise truth from lies? What constitutes legitimate, or morally acceptable behaviour, when it comes to protecting ourselves from real or planned attacks?

Here, we survey the ways that truth and lies are increasingly entwined and legitimised to support behaviour that is unjustifiable, from disaffected parties to Nation States, and all their legal and word