The shadow over Hiroshima by Mathew Walls

Eight decades after Hiroshima became synonymous with humanity's capacity for instantaneous self-destruction, the world once again finds itself wondering whether a cornered nuclear power might conclude that the unthinkable has become merely another military option.

The comparison is uncomfortable, imperfect and deliberately provocative. Yet it refuses to disappear. Russia's war against Ukraine has become the defining military stalemate of our era. It has consumed staggering quantities of ammunition, men, equipment and political capital. It has rewritten Europe's security landscape while exposing the limitations of modern conventional warfare. Above all, it has become deeply personal. Vladimir Putin has invested not merely the prestige of his government but his own historical legacy in a conflict that was supposed to last days rather than years.

That changes the calculus. Wars are rarely at their most dangerous when armies are advancing. They become most unpredictable when leaders begin to believe they are running out of exits.

Desperation is one ingredient. Pride is another. The latter is often underestimated in modern geopolitical analysis because economists prefer statistics and generals prefer maps. Yet pride has started more wars than resources ever have. National humiliation, wounded prestige and the refusal to acknowledge failure have repeatedly pushed governments into decisions that appeared irrational from the outside but inevitable within the walls of power.

That is what makes the nuclear question impossible to dismiss entirely. The world has become accustomed to discussing nuclear weapons as instruments of deterrence rather than actual battlefield tools. They occupy strategic documents, diplomatic speeches and military exercises, existing almost as theoretical objects. Hiroshima transformed them into symbols so horrifying that their practical use became politically toxic.

But symbols lose their power when leaders convince themselves that circumstances are exceptional. Every generation believes its crisis is unique. Every government facing existential pressure believes history grants it exemptions.

That does not mean another Hiroshima is imminent. Far from it. The political, military and diplomatic costs of crossing the nuclear threshold would be almost unimaginable. Even a so-called tactical nuclear strike would shatter decades of international norms and introduce a level of uncertainty no government could confidently control. Escalation would cease to be an academic concept and become a terrifying chain reaction governed by fear, miscalculation and emotion.

The true danger is therefore not inevitability but normalisation. Each casual discussion about limited nuclear options chips away at the psychological barrier that has protected humanity since 1945. Every television debate treating atomic weapons as merely larger artillery pieces subtly reshapes public imagination. What once seemed absolutely impossible gradually begins to sound merely unlikely.

History teaches that this is precisely how catastrophes become conceivable. Perhaps the greatest lesson of Hiroshima is not the bomb itself but the mindset that preceded it: the belief that extraordinary violence could produce a decisive political solution. That temptation survives every generation because technology evolves faster than human nature.

Whether Putin ever reaches such a conclusion is ultimately unknowable. Dictators often operate inside informational bubbles where reality becomes increasingly distorted by loyalty and fear. The more isolated the leadership, the greater the risk that conventional logic no longer applies.

The frightening truth is that civilisation has never abolished the possibility of nuclear war. It has merely postponed it through restraint, mutual fear and a shared understanding that some victories would resemble collective defeat.

The question is not whether another Hiroshima is technically possible. It always has been. The real question is whether humanity's oldest political weakness, pride, can once again overpower its newest and most terrible wisdom.