|  | 
| Vasili Arkhipov and Stanislav Petrov without whose courage and quick thinking our world might be long gone. | 
Today
 we remember the atomic bomb dropped on the Japanese city of Nagasaki in
 1945. With Japan continuing to resist the US forces in the Pacific 
after the earlier bombing of Hiroshima, the Allies concluded that a 
second atomic attack was required to force a surrender, which duly took 
place on 15 August.
By
 1949, both the West and the Soviet bloc had acquired nuclear weapons 
and the Cold War had begun in earnest. Over the years that followed, 
massive nuclear arsenals were built up on both sides with the capacity 
to destroy the earth several times over. Initially, these were to be 
carried on bomber planes, as at Hiroshima and Nagasaki, but as time went
 by intercontinental ballistic missiles (ICBMs) capable of thousands of 
miles of flight became the preferred delivery method. These were held in
 underground silos, on submarines and on mobile truck launchers. The
 doctrine of Mutual Assured Destruction (MAD)
 held that because both sides could destroy each other, nuclear weapons 
would never be used. In this way, an awful "peace" could be established -
 except as noted in 
an earlier blog, the actual result was a long series of devastatingly violent and bloody proxy wars.
Yet quite aside from the appalling "
Balance of Terror"
 and dreadful waste of resources required by MAD, the doctrine itself 
did not remain static. By the early 1980s, under the Reagan Presidency, 
American political leaders such as Henry Kissinger were openly talking 
about the feasibility of 
"limited" nuclear war
 where smaller nuclear devices could be deployed for use on European 
battlefields but somehow contained from developing into global 
conflagration. Similarly, some publically postulated more than a little 
enthusiatically about a first strike on the Soviet Union, which would 
involve firing US missiles at the sites of Soviet ones, "knocking out" 
the Russians before they could respond.
Into this mix 
came increasingly sophisticated computerisation. Both sides relied on 
not always particularly reliable early warning systems to detect attacks
 by each other. With the short time and high stakes involved, Command 
and Control required almost instantaneous human decisions on how to 
respond to data, decisions that could determine the very survival of 
life on Earth.
The possible consequences were powerfully depicted in 1980s popular culture in films like 
Wargames and the song
 99 Balloons,
 but were officially dismissed as the biased ramblings of peace 
activists or the sensationalist fiction of pulp novelists. Yet the 
supposed fiction could not have been much closer to the truth.
On 26 September 1983,
 Stanislav Petrov
 was on duty as a Lieutenant-Colonel in the Soviet Defence Forces at a 
bunker near Moscow. His role was to identify any alerts on the Early 
Warning System, decide if they were real and report them to his 
superiors, who would have barely more than three or four minutes to 
decide whether to respond with a counter-attack. Following the Soviets' 
shooting down of a South Korean passenger jet that had entered their 
airspace a couple of weeks earlier, leading to the deaths of scores of 
American passengers, tension was high between Andropov's Soviet 
Government and the Reagan White House.
Just after 
midnight, the system identified a single US Minuteman nuclear missile 
being fired at the Soviet Union. Petrov concluded that this was a 
computer error, judging that an American first strike would be likely to
 involve large numbers of missiles. Shortly after, however, the system 
identified a further four Minutemen being launched against the Soviets. 
Again, Petrov concluded, correctly, that this was a further false alarm.
 The cause of the computer error was later identified as sunlight 
hitting high altitude clouds. Given the split second decision-making 
required and the international situation, had he made a different call, 
most commentators, including one of his superior officers, have 
subsequently judged that Andropov would almost certainly have called for
 a full counter-strike, plunging the world into the nuclear abyss 
because of a glitch in the computer system.
|  | 
| Stanislav Petrov interviewed recently | 
The incident was kept secret until after the end of 
the Cold War. In the bureaucracy that was the Soviet Union, Petrov was 
praised by his superiors for his prompt thinking, but disciplined for 
not properly completing his paperwork about the incident. He remains 
today a largely unknown and unsung hero (although he has been the 
subject of 
a documentary film and has received several peace awards).
The
 1983 incident was not the only one of this nature - in 1962, when 
American ships began to drop depth charges on a Soviet submarine in 
international waters during the Cuban Missile crisis, the Political 
Officer and the Captain, out of contact with Moscow for several days, 
feared war had begun and wanted to launch a nuclear torpedo at their 
attackers. The Deputy Captain,
 Vasili Arkhipov,
 voted against doing so and as Soviet military regulations required 
unanimous agreement between the three of them, the strike did not 
proceed. Instead, with oxygen getting low, they surfaced among the 
American ships and headed home.
There have been other accidental occurrences, such as American bombers 
crashing and almost detonating their nuclear payload, while the 
NATO Able Archer military manoeuvres
 in November 1983, just weeks after the Petrov incident, were so 
realistic that the Soviet Politburo put Warsaw Pact forces on high 
alert, fearing an imminent invasion. In 1979, the American NORAD early 
warning system registered a full Soviet strike on the USA as being 
underway. A US senator present at NORAD at the time described scenes of 
total panic as operatives prepared a counter-strike, fortunately 
realising at the very last moment that what they were seeing was 
actually an accidental repeat of a test scenario run by their own side.
The last known incident was as late as 1995,
 when by then Russian as opposed to Soviet radar systems mistook a 
Norwegian/US rocket test as a possible attack. Perhaps most terrifyingly
 of all, the semi-inebriated President Boris Yeltsin was handed the 
codes required to decide on a nuclear attack on the West. Fortunately, 
the trajectory of the missile was soon seen to be heading away from 
Russian airspace.
So just as the fingers on the trigger
 of our survival have been those of a few men, we would have been long 
gone now was it not for the prompt thinking and courage of two Soviet 
officers. At other times, it seems we have been fortunate that computer 
errors became evident just in time to stop people who were automatically
 rushing to follow predetermined instructions to wipe us from existence 
and irradiate our planet for aeons to come.
Hiroshima
 and Nagasaki are so far the only times atomic weapons have been used in
 war, although there have been many test explosions as well. With the 
West seemingly set on confrontation with the Russians over Ukraine, 
there is more than a little enthusiasm among some of our would-be 
Napoleons for a return to the Cold War. With our ever greater reliance 
on computerisation to run our military, with even autonomous decision 
making robots in development by both the USA and UK, they may want to 
stop and consider the terrifying future they are offering.
Meantime,
 as we remember the dead of 1945, let's also remember Vasili Arkhipov 
and Stanislav Petrov, the men who saved the world. For now.
|  | 
| A Nagasaki child | 
|  | 
| Humans melted together at Hiroshima |