The news arrives with the force of a historical epiphany: Japan, that most pacifist of post-war states, is racing to rearm. And Britain’s Defence Minister, ever eager to claim a mantle that history may have withdrawn, insists the UK must ‘lead European deterrence’. Let us pause to savour the irony: an island nation off the coast of Asia, once the exemplar of military restraint, now flexing its muscles, while another island nation, off the coast of Europe, pretends it still commands the global stage. The comparison to the Fall of Rome is irresistible, but perhaps the Victorian Era provides a better mirror. Then, it was Britannia ruling the waves. Now, it is a bizarre pas de deux between Tokyo and London, each trying to shore up its place in a world order that is shifting beneath their feet.
Japan’s rearmament is not merely a response to Chinese assertiveness or North Korean belligerence. It is a recognition that the American umbrella, once so reliable, is no longer cast with the same certainty. The Japanese, ever pragmatic, understand that a nation’s sovereignty is ultimately measured by its ability to defend itself. They have watched the American retreat from Afghanistan, the equivocation in Ukraine, and they have drawn the correct conclusion: the era of unconditional protection is over. So they build destroyers, acquire long-range missiles, and debate constitutional changes that would have seemed unthinkable a decade ago. This is not aggression. This is survival.
And what of Britain? The Defence Minister’s call to ‘lead European deterrence’ is a piece of theatre that would have amused Disraeli. The UK, having extricated itself from the European Union, now seeks to dictate the continent’s defence posture. It is a curious inversion of the Brexit promise: take back control, then reinsert yourself into European affairs through the back door of Nato. But leading European deterrence requires more than rhetoric. It requires a military that can project power, a defence budget that matches ambitions, and a population willing to endure the sacrifices that such leadership demands. The British public, after decades of being told that the peace dividend would buy them better healthcare and schools, is in no mood for a new arms race.
The paralells with the late Roman Empire are instructive. Then as now, the periphery was arming itself while the centre debated tax increases. Rome’s legions were stretched thin, its enemies at the gates, yet the Senate fiddled with procedural reforms. Today, Japan arms itself because it knows the alternative is client status. Britain talks of leadership because it fears irrelevance. Both are symptoms of a deeper malady: the decline of the liberal international order, which for seventy years provided stability under American hegemony. That order is fraying, and no amount of ministerial posturing will stitch it back together.
What we need is not more grand statements about deterrence, but a cold-eyed assessment of what Britain can actually do. It has a fine navy, a capable air force, and a nuclear deterrent. But it does not have the industrial base to sustain a prolonged conventional conflict. It does not have the demographics to man a mass army. And it does not have the political consensus to fund a war economy in peacetime. The Defence Minister’s words are therefore less a strategy than a comfort blanket, wrapped around a nation that cannot bear to admit its own diminished circumstances.
Japan, at least, has the advantage of clarity. It knows its neighbourhood is dangerous, and it acts accordingly. Britain, still dreaming of empire, imagines it can pick and choose its battles from the safety of an island that no longer commands the seas. The truth is that the era of British global leadership ended when the sun set on the empire. What remains is a middling power with a loud voice and a fading memory of greatness. The Japanese understand this. They are not looking to London for leadership. They are looking to their own shipyards, their own arsenals, their own future. Perhaps the Defence Minister should do the same, rather than lecturing us about deterrence we can no longer afford.
