The claim that nuclear weapons have made the world safer has become one of the most durable articles of faith in modern strategy. Deterrence, we are told, works. Great powers no longer fight each other directly because the cost of victory has become unthinkable. The long peace among major states since 1945 is offered as proof. Yet the record is not one of calm stability. It is a history of repeated near-catastrophes, institutional failures, human error, and sheer luck. Nuclear weapons did not abolish the possibility of catastrophic war. They merely raised the stakes so high that every close call carries the potential for civilisation-ending consequences. The system has survived so far. That is not the same as being safe.
The Cuban Missile Crisis remains the most famous example, but it is far from unique. In October 1962 the United States and the Soviet Union came within hours of nuclear exchange. A single unauthorised launch, a misread radar return, or a different decision by a submarine commander could have ended the standoff differently. Vasily Arkhipov's refusal to authorize the use of a nuclear torpedo is now celebrated as an act of restraint. The fact that the fate of millions rested on one man's judgment should not be comforting. It should be terrifying.
Other near misses followed. In 1983, Soviet officer Stanislav Petrov correctly judged that a satellite warning of incoming American missiles was a false alarm. Protocol called for him to report an attack. He did not. That same year, the NATO exercise Able Archer 83 was interpreted by some in the Soviet leadership as possible cover for a real first strike. The world moved closer to the edge than most citizens ever knew. In 1961 a B-52 carrying two hydrogen bombs broke apart over North Carolina; one of the weapons came extremely close to detonating after its safety mechanisms failed in sequence. In 1995 a scientific rocket launched from Norway was briefly mistaken by Russian early-warning systems for a possible attack, prompting President Yeltsin to activate the nuclear briefcase. These are not obscure footnotes. They are documented episodes in which the machinery of deterrence almost produced the outcome it was supposed to prevent.
Each of these incidents reveals the same structural problem. Nuclear deterrence depends on perfect information, perfect communication, perfect control, and perfect human judgment under extreme stress. None of those conditions is reliable. Accidents happen. Sensors fail. Leaders misread intentions. Subordinates face impossible choices with incomplete data. The system has been fortunate. Fortune is not a strategy.
If the possession of nuclear weapons truly stabilises international relations and makes large-scale war less likely, then the logical implication is clear. The more states that possess them under the same logic of mutual vulnerability, the more stable the system should become. That is the consistent application of the deterrence argument. Yet the same voices that celebrate nuclear weapons as guarantors of peace treat the prospect of Iran acquiring them as an existential emergency. The inconsistency is revealing. It suggests that the real belief is not that nuclear weapons make the world safer in principle, but that they are safe only in the hands of certain countries. Deterrence is trusted when the deterring power is "us" or our allies. It is feared when the deterring power is someone else.
The history of near misses does not prove that nuclear war is inevitable. It does prove that the margin for error has always been thinner than the official narratives admit. The creation of nuclear weapons did not usher in an age of reliable safety. It created a permanent condition of managed risk in which catastrophe remains possible at any moment of technical failure, miscalculation, or escalation. That risk has not disappeared. It may yet be realized.
https://spectator.com/article/how-nukes-made-the-world-safer/