On 6 and 9 August this year, we will mark the 80th anniversaries of the two occasions on which nuclear weapons have ever been used in war – the bombings of Hiroshima and Nagasaki.* Humanity has perpetrated and experienced a great deal of harm in the past eight decades but nuclear weapons have not been used again. Despite today’s widespread and intensifying perception of nuclear risk, the nuclear taboo survives.

That does not mean the nuclear problem has been solved, of course. It is “an encouraging fact”, as the Nobel Peace Prize Committee put it when giving the 2024 award to the movement of Japanese nuclear survivors (the hibakusha), Nihon Hidankyo. But not more than that. And honouring the hibakusha in this way was also intended as a wake-up call to those many people who until recently regarded nucleapons as yesterday’s problem.