It never changes War |
A view to kill |
“”I firmly believe that before many centuries more, science will be the master of man. The engines he will have invented will be beyond his strength to control. Some day science may have the existence of mankind in its power, and the human race commit suicide by blowing up the world.
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—Henry Adams, US ambassador to the UK, 1862.[1] |
“”Every inhabitant of this planet must contemplate the day when this planet may no longer be habitable. Every man, woman and child lives under a nuclear sword of Damocles, hanging by the slenderest of threads, capable of being cut at any moment by accident or miscalculation or by madness. The weapons of war must be abolished before they abolish us.
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—John F. Kennedy[2] |
Nuclear war is the ultimate unthinkable.
Technically, a nuclear war would be any war in which nuclear weapons are used. This could range from a single, small weapon (like a bunker buster or the ones dropped by the United States on Japan in World War II) all the way up to a full-blown Armageddon between nuclear powers.
The nuclear powers have put a lot of effort into preventing the latter from ever occurring, engaging in various forms of deterrence. Until recently, it was assumed that Mutual Assured Destruction would be the best way to prevent states from attacking each other with nuclear weapons, since it would be suicide.[3] However, with the proliferation of nuclear weapons and the fear that undeterrable wackos with wild political ambitions or religious fanatics that literally believe in the end of days as something desirable might get them, people are frantically working to find alternatives.
“”A war today or tomorrow, if it led to nuclear war, would not be like any war in history. A full-scale nuclear exchange, lasting less than 60 minutes, with the weapons now in existence, could wipe out more than 300 million Americans, Europeans, and Russians, as well as untold numbers elsewhere. And the survivors, as Chairman Khrushchev warned the Communist Chinese, "the survivors would envy the dead." For they would inherit a world so devastated by explosions and poison and fire that today we cannot even conceive of its horrors. So let us try to turn the world away from war. Let us make the most of this opportunity, and every opportunity, to reduce tension, to slow down the perilous nuclear arms race, and to check the world's slide toward final annihilation.
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—John F. Kennedy again, a real fountain of excellent quotes.[4] |
Attempts have been made to evaluate the likely effects of a full nuclear exchange. Some have speculated that enough nuclear bombs going off at once would create a "nuclear winter" by blanketing the earth in long-lasting airborne sand which would filter out sunlight and result in the death of most life on the planet. In fact, studies have shown that even a small regional nuclear war with 100 Hiroshima-sized weapons could have devastating effects on agriculture worldwide.[5] Even if this was not the result, the extreme increase in radiation would not only cause many health hazards and genetic abnormalities, but it would also contaminate the soil so that any crops that were produced could not be safely eaten. This would be similar to what happened in central Ukraine and southern Belarus after the Chernobyl disaster.
Many hawks have tried to downplay the possible effects of nuclear war, many even believing that a nuclear war is winnable (thus the massive amounts of spending on the Strategic Defense Initiative in the Reagan administration, as well as its successor National Missile Defense, both considered abject failures by outside observers).[6] Scientists (operative term being "scientist", not strategists), as a general rule, tend to disagree.
The most effective technique to use in a nuclear war is quite simple: not to have one. India and Pakistan are two nations that, on the brink of war, decided to acquire nuclear weapons. In response to the other one acquiring, and testing, nuclear weapons they began to increase diplomatic relations to the point where disputes between the countries are now settled over a game of cricket which has the effect of not destroying the region — and the added bonus that you can break at 3:30 for tea.[7] The common dread of what a nuclear strike might lead to was not strong enough to prevent the Kargil War, a short but vicious conventional war over part of Kashmir in 1999, but the mere possibility of a nuclear exchange was enough to motivate the U.S. to mediate a rapid end to the conflict. On the other hand, a global nuclear exchange almost happened by accident several times so far due to errors in computer systems and/or the humans operating them.
None of this is to say the immediate effects of a nuclear blast are a picnic. Whatever argument can be had over the long-term effects of nuclear attack, the short-term effects are documented in excruciating detail from first-hand experience, both at test sites and actual use during WWII.
“”The best authorities are unanimous in saying that a war with H-bombs might possibly put an end to the human race. It is feared that if many H-bombs are used there will be universal death, sudden only for a minority, but for the majority a slow torture of disease and disintegration.
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—Bertrand Russell, Russell-Einstein Manifesto.[8] |
The first (and sometimes last) thing noticed after a nuclear detonation is called the "double flash" — an intense blast of light that's immediately followed by the debris generated by the explosion. This flash covers a far wider section of the electromagnetic spectrum than visible light, sending out intense gamma radiation as well as immense amounts of heat. In a ground burst, the surface will be vitrified into a type of glass called trinitite, with irradiated rock and soil kicked up into the air as fallout; in an air burst, the fallout will not be as intense, but virtually everything directly under the explosion will be vaporized immediately, with a few structures left partially standing,[9] and objects in the area will sometimes cast permanent shadows as the intense energy bleaches walls and ground behind them. The intense heat carries quite a distance, flash-cooking any organic matter that isn't outright incinerated and causing severe burns to all people within range of the heat blast (Hiroshima and Nagasaki survivors reported seeing people whose eyes were literally melted by the flash, and quite a few people developed burns in the same pattern as the fabric of their clothing[10]), while the winds caused by the blast flatten anything unreinforced for kilometers around. Even outside the main area of destruction, the flash sets fires to flammable structures that would otherwise be relatively undamaged.[11]
It's not enough to survive the initial blast. The gamma rays emitted by the detonation have already done their damage, and radiation sickness can set in — hair loss, nausea, spontaneous bleeding, loss of white blood cells and collapse of the immune system, and sometimes just sudden death. Damage to sex cells may result in permanent infertility. Damage to bone marrow may result in easier wound infection and overall slower healing. However, if you survive the first month, your prospects are mostly good: less than 1% of total victims of Hiroshima and Nagasaki died from late effects, such as radiation-induced cancer.[12]
In the end, cleanup and rebuilding in Hiroshima and Nagasaki took several decades, and this was in a relatively functional country with an occupation force working hard on rebuilding it, and with (by today's standards) very small-yield bombs. Imagine if it were large scale.
In addition to all the nasty health and destruction effects, the gamma rays interacting with electrons in the upper atmosphere produce an electromagnetic pulse (EMP) that can fry many types of electronics, especially the MOSFET-based chips[13] that power virtually anything computerized.[14]
Note that EMP is portrayed inaccurately in most media. It will not occur in space.[15] It will not create a lasting haze that interferes with electronic equipment for weeks on end. It will not prevent the spark plugs in your car's engine from firing (unless your car's ignition timing is controlled by an embedded computer that gets fried by the pulse, of course). It will not blind the area to radio communications for 90 minutes, requiring the plucky hero to run the gauntlet of Soviet stormtroopers so that he can get his message to headquarters in time.
“”The only winning move is not to play.
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—WarGames |
In the 1960s, there were considered to be two types of nuclear war: counterforce and countervalue. In reality, a nuclear war would tend to be a mixture of the two, but it is interesting to look at them separately.
In a counterforce nuclear exchange, the objective would be to destroy the opponent's ground-based nuclear weapons. In order to do this, one needs really massive penetrating nuclear weapons which would explode at ground level (or ideally below) and dig down to destroy hardened bunkers and buried weapons. This type of explosion would produce massive amounts of nuclear contamination as the ground near the explosion would be heavily irradiated before being blown into the atmosphere. On the other hand, the immediate death toll would be lower as nuclear installations are frequently located away from population centers. A counterforce attack is the classic "first strike" scenario, in which one side attempts to disarm the other, leaving them at the mercy of the attacker.
“”Military experts are saying that a 100-megaton bomb such as Mr. Khrushchev talked about – one with a wallop equal to 100 million tons of TNT – would be too big to be efficient. That's nice.
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—New York Herald Tribune on the Tsar Bomba, 1961 |
In this case, the strike is against the opponent's cities and the objective is to destroy their will to resist. If there's anyone left with a will of any kind, anyway. The US attacks on Japan were clearly countervalue. Countervalue strikes are airbursts some miles above a city, as this has the effect of increasing the blast radius. Although casualties are very high, the residual radiation and fallout are less than that from a counterforce strike. This scenario is the ultimate step on the escalation ladder, in which a nuclear war could very easily end civilization itself.
During the Cold War, both superpowers considered a counterforce strike a much more serious threat than an outright attack on civilian targets, and spent enormous amounts of money on developing nuclear capabilities that would survive it and constitute a reliable "second strike" deterrent. This is evidenced by the massive redundancy in warheads and delivery systems both sides built up during the sixties, as well as attempts to make them more survivable by storing missiles in hardened bunkers or moving them to submarines. On the other hand, few serious attempts were made to defend civilian targets until the mid-eighties saw a renewed interest in missile defense programs (c.f. the SDI). An important reason for this discrepancy is signaling your intentions to the would-be opponent: having a secure second-strike capability is indicative of a defensive stance, as an insecure capability wouldn't be of much use except for an aggressive first strike. Conversely, securing civilian targets can actually make you appear aggressive, because a side that doesn't have to worry about retaliation could strike with impunity. Damned if you do, damned if you don't. Welcome to the world of nuclear weapons.
A dirty bomb is a conventional explosive that is set up to spread radioactive material of some kind (such as waste from a reactor) when detonated. Thus, the bomb does far less damage than a nuclear weapon and even the conventional explosive doesn't need to be particularly big. These devices are theorized to be popular among potential terrorists, to scare the bejeebus out of us. However, like several of the "chemical, biological, and nuclear" exploits that terrorists are supposed to want to use, such material and devices would be very dangerous to make and handle, and do far less damage than typically understood.[16] Unfortunately, there might be plenty of terrorists willing to risk what they see as martyrdom to get such a bomb built, delivered, and detonated.[17] The goal of most terrorism isn't simply body counts, but the political and psychological effects, and people are frightened of dirty bombs, far more so than objectively more destructive alternatives – bad science fiction having reinforced this idea that radiation causes you to mutate doesn't help. The detonation of a dirty bomb would therefore be unlikely to cause real damage or radioactive effects that were immediately deadly, but the fear brought about by them more than make up for this.
One dirty bomb design that has never been put into practice does use a nuclear weapon as its delivery system. This is the cobalt bomb. You replace the usual uranium tamper around the Teller-Ułam secondary with a tamper made of non-radioactive cobalt-59. When the secondary detonates, the released neutrons react with the cobalt, turning it into radioactive cobalt-60, and the explosion flings it away for many miles around. The end result is the same as a conventional dirty bomb, except on a massive scale. No bombs of this type were ever built.
Note that 'cobalt bomb' can also refer to gamma sources containing cobalt-60, used in radiotherapy of cancer and radiosurgery.
Besides a number of technical errors[18] that caused Americans or Russians to freak out until they got to the bottom of things, there were five events in the Cold War that almost led to a large-scale nuclear conflict between the two:
The Treaty on the Non-Proliferation of Nuclear Weapons[22] prevents nuclear weapons states from transferring them to other states or helping them to make their own, whilst tacitly acknowledging that owning nuclear weapons isn't illegal per se. The treaty also imposes an obligation on nuclear weapon states to "pursue negotiations in good faith" on the destruction of remaining stockpiles, whilst also preserving the right of states to research and utilize nuclear energy for peaceful means. This last provision has led to several instances where states have been accused of developing a nuclear weapons program under the guise of civilian research, such as Iran and North Korea.
In 1996, the International Court of Justice was invited by the UN General Assembly to issue an Advisory Opinion on the question "Is the threat or use of nuclear weapons in any circumstance permitted under international law?"[23] In the Court's judgement, they found that there was no explicit or customary prohibition on the use of nuclear weapons, but that, generally, the use of nuclear weapons would be contrary to international humanitarian law (particularly the prohibition against using weapons that cannot distinguish between combatants and civilians). Further, there is a ban on the use of weapons which do excessive damage to the environment, which would obviously be the case with nuclear weapons. However, the Court also held that "in an extreme circumstance of self-defence, in which the very survival of a State would be at stake," the legal situation was less clear and it was impossible to say whether the threat or use of nuclear weapons in such a case would be legal.[24] On the whole, nobody came out of this case pleased – nuclear weapons remain in a state of legal limbo, without any clearly defined parameters for their use except "only when your state's survival is at stake." (Which isn't terribly comprehensive.)
The threat of nuclear war and the fear of its aftermath has become a fertile topic in popular culture, particularly during the 50s and 60s and then later in the early 80s as the tensions of the Cold War waxed and waned. Many movies depict attempts to prevent it, such as Dr. Strangelove, Fail-Safe, and WarGames. Humorist/musician Tom Lehrer featured the threat of nuclear war in some of his songs, including "We Will All Go Together When We Go," "The Wild West is Where I Want To Be," and "So Long Mom," later inspiring Weird Al Yankovic's "Christmas At Ground Zero"; more serious songs on the subject include Nena's "99 Luftballons" (a song produced in both German and English about an accidental war) and Timbuk3's "The Future's So Bright I Gotta Wear Shades." Cold War spy fiction became a very popular genre of both books and movies, with authors such as Ian Fleming, Tom Clancy,[25] Dean Koontz, John LeCarré, and many others building lucrative careers on both the human drama of covert ops and the overhanging threat of total war.
The aftereffects of nuclear war have also been popular topics for fiction, in movies (Threads, The Day After,[26] Damnation Alley, the Terminator trilogy), television (Jericho, Woops!, several episodes of the multiple incarnations of The Twilight Zone, and as historical background in some episodes of Star Trek and Babylon 5), novels (On The Beach, Z for Zacariah, Farnham's Freehold and the Metro book series also an establishing detail for Lord of the Flies and A Canticle for Leibowitz), and video games (Wasteland, "DEFCON" and the Fallout series). It also comes as no surprise that the specter of the atom looms in the background of some Japanese works, whether based on the actual bombings of Hiroshima and Nagasaki (Barefoot Gen[27]) or how doomsday devices and powerful weapons in their pop culture tend to be thinly-veiled nuclear weapons.
During the Cold War, many propaganda films were created as well, generally of the sort considered most appropriate for Mystery Science Theater 3000, and aspects of the civil defense infrastructure became part of the national consciousness in many countries (most notably, in the United States, CONELRAD[28] and its successor, the Emergency Broadcast System[29]).
“”Had I known that the Germans would not succeed in producing an atomic bomb, I would not have lifted a finger.
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—Albert Einstein.[30] |
The following nations have at some point in their history possessed nuclear weapons:
Almost every time a nation develops nuclear weapons, another nation also feels forced to. This is what makes proliferation so hard to stop. It doesn't particularly help that a number of countries, including Canada, South Korea, Germany, and Japan, possess the technology to create nuclear weapons quite quickly (but, so far, have chosen not to – in Japan's case, it's because they know what it feels like to be on the receiving end). Though it must also be remembered that it is one thing to develop a nuclear weapon and quite another to check that it works as designed. And developing and testing a reliable delivery system is yet another thing.